Home / 119,887.86-165,343.68-72,132.29

Finding the Fourth Proportional to 119,887.86, 165,343.68 and 72,132.29

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Solution

The fourth proportional to 119,887.86, 165,343.68 and 72,132.29 is: 99,481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,887.86 : 165,343.68 = 72,132.29 : x
  2. Step 2: Convert to fraction form
    119,887.86/165,343.68 = 72,132.29/x
  3. Step 3: Cross multiply
    119,887.86x = 165,343.68 × 72,132.29
  4. Step 4: Simplify right side
    119,887.86x = 11,926,618,275.43
  5. Step 5: Solve for x
    x = 11,926,618,275.43/119,887.86
  6. Step 6: Final answer
    x = 99,481.45

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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.