Home / 145,157,078.90-218,060,021.55-121,269,206.90

Finding the Fourth Proportional to 145,157,078.90, 218,060,021.55 and 121,269,206.90

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Solution

The fourth proportional to 145,157,078.90, 218,060,021.55 and 121,269,206.90 is: 182,174,827.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,157,078.90 : 218,060,021.55 = 121,269,206.90 : x
  2. Step 2: Convert to fraction form
    145,157,078.90/218,060,021.55 = 121,269,206.90/x
  3. Step 3: Cross multiply
    145,157,078.90x = 218,060,021.55 × 121,269,206.90
  4. Step 4: Simplify right side
    145,157,078.90x = 26,443,965,869,965,412
  5. Step 5: Solve for x
    x = 26,443,965,869,965,412/145,157,078.90
  6. Step 6: Final answer
    x = 182,174,827.92

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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.