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Finding the Fourth Proportional to 125,097.92, 172,619.52 and 71,377.28

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Solution

The fourth proportional to 125,097.92, 172,619.52 and 71,377.28 is: 98,491.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,097.92 : 172,619.52 = 71,377.28 : x
  2. Step 2: Convert to fraction form
    125,097.92/172,619.52 = 71,377.28/x
  3. Step 3: Cross multiply
    125,097.92x = 172,619.52 × 71,377.28
  4. Step 4: Simplify right side
    125,097.92x = 12,321,111,812.51
  5. Step 5: Solve for x
    x = 12,321,111,812.51/125,097.92
  6. Step 6: Final answer
    x = 98,491.74

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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.