Home / 131,690,917.02-181,720,221.02-72,942,605.60

Finding the Fourth Proportional to 131,690,917.02, 181,720,221.02 and 72,942,605.60

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Solution

The fourth proportional to 131,690,917.02, 181,720,221.02 and 72,942,605.60 is: 100,653,459.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,690,917.02 : 181,720,221.02 = 72,942,605.60 : x
  2. Step 2: Convert to fraction form
    131,690,917.02/181,720,221.02 = 72,942,605.60/x
  3. Step 3: Cross multiply
    131,690,917.02x = 181,720,221.02 × 72,942,605.60
  4. Step 4: Simplify right side
    131,690,917.02x = 13,255,146,411,406,690
  5. Step 5: Solve for x
    x = 13,255,146,411,406,690/131,690,917.02
  6. Step 6: Final answer
    x = 100,653,459.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.