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Finding the Fourth Proportional to 161,419.92, 242,127.36 and 72,610.68

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Solution

The fourth proportional to 161,419.92, 242,127.36 and 72,610.68 is: 108,914.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,419.92 : 242,127.36 = 72,610.68 : x
  2. Step 2: Convert to fraction form
    161,419.92/242,127.36 = 72,610.68/x
  3. Step 3: Cross multiply
    161,419.92x = 242,127.36 × 72,610.68
  4. Step 4: Simplify right side
    161,419.92x = 17,581,032,256.20
  5. Step 5: Solve for x
    x = 17,581,032,256.20/161,419.92
  6. Step 6: Final answer
    x = 108,914.89

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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.