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Finding the Fourth Proportional to 125,246.71, 172,836.88 and 71,530.62

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Solution

The fourth proportional to 125,246.71, 172,836.88 and 71,530.62 is: 98,710.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,246.71 : 172,836.88 = 71,530.62 : x
  2. Step 2: Convert to fraction form
    125,246.71/172,836.88 = 71,530.62/x
  3. Step 3: Cross multiply
    125,246.71x = 172,836.88 × 71,530.62
  4. Step 4: Simplify right side
    125,246.71x = 12,363,129,185.27
  5. Step 5: Solve for x
    x = 12,363,129,185.27/125,246.71
  6. Step 6: Final answer
    x = 98,710.21

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1.5x scale

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.