Home / 12,121,460,086.20-18,182,190,129.30-7,985,573,647.80

Finding the Fourth Proportional to 12,121,460,086.20, 18,182,190,129.30 and 7,985,573,647.80

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Solution

The fourth proportional to 12,121,460,086.20, 18,182,190,129.30 and 7,985,573,647.80 is: 11,978,360,471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121,460,086.20 : 18,182,190,129.30 = 7,985,573,647.80 : x
  2. Step 2: Convert to fraction form
    12,121,460,086.20/18,182,190,129.30 = 7,985,573,647.80/x
  3. Step 3: Cross multiply
    12,121,460,086.20x = 18,182,190,129.30 × 7,985,573,647.80
  4. Step 4: Simplify right side
    12,121,460,086.20x = 145,195,218,355,827,359,744
  5. Step 5: Solve for x
    x = 145,195,218,355,827,359,744/12,121,460,086.20
  6. Step 6: Final answer
    x = 11,978,360,471.70

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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.