Home / 116,987.08-161,428.50-66,000.61

Finding the Fourth Proportional to 116,987.08, 161,428.50 and 66,000.61

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Solution

The fourth proportional to 116,987.08, 161,428.50 and 66,000.61 is: 91,073.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,987.08 : 161,428.50 = 66,000.61 : x
  2. Step 2: Convert to fraction form
    116,987.08/161,428.50 = 66,000.61/x
  3. Step 3: Cross multiply
    116,987.08x = 161,428.50 × 66,000.61
  4. Step 4: Simplify right side
    116,987.08x = 10,654,379,471.39
  5. Step 5: Solve for x
    x = 10,654,379,471.39/116,987.08
  6. Step 6: Final answer
    x = 91,073.13

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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.