Home / 78,166.12-117,248.13-19,001.62

Finding the Fourth Proportional to 78,166.12, 117,248.13 and 19,001.62

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Solution

The fourth proportional to 78,166.12, 117,248.13 and 19,001.62 is: 28,502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166.12 : 117,248.13 = 19,001.62 : x
  2. Step 2: Convert to fraction form
    78,166.12/117,248.13 = 19,001.62/x
  3. Step 3: Cross multiply
    78,166.12x = 117,248.13 × 19,001.62
  4. Step 4: Simplify right side
    78,166.12x = 2,227,904,411.97
  5. Step 5: Solve for x
    x = 2,227,904,411.97/78,166.12
  6. Step 6: Final answer
    x = 28,502.17

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1.5x scale

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.