Home / 12,121,460,099.70-18,182,190,149.55-7,985,573,661.30

Finding the Fourth Proportional to 12,121,460,099.70, 18,182,190,149.55 and 7,985,573,661.30

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Solution

The fourth proportional to 12,121,460,099.70, 18,182,190,149.55 and 7,985,573,661.30 is: 11,978,360,491.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121,460,099.70 : 18,182,190,149.55 = 7,985,573,661.30 : x
  2. Step 2: Convert to fraction form
    12,121,460,099.70/18,182,190,149.55 = 7,985,573,661.30/x
  3. Step 3: Cross multiply
    12,121,460,099.70x = 18,182,190,149.55 × 7,985,573,661.30
  4. Step 4: Simplify right side
    12,121,460,099.70x = 145,195,218,762,994,778,112
  5. Step 5: Solve for x
    x = 145,195,218,762,994,778,112/12,121,460,099.70
  6. Step 6: Final answer
    x = 11,978,360,491.95

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.