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Finding the Fourth Proportional to 125,470.80, 188,424.90 and 121,534.20

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Solution

The fourth proportional to 125,470.80, 188,424.90 and 121,534.20 is: 182,513.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,470.80 : 188,424.90 = 121,534.20 : x
  2. Step 2: Convert to fraction form
    125,470.80/188,424.90 = 121,534.20/x
  3. Step 3: Cross multiply
    125,470.80x = 188,424.90 × 121,534.20
  4. Step 4: Simplify right side
    125,470.80x = 22,900,069,481.58
  5. Step 5: Solve for x
    x = 22,900,069,481.58/125,470.80
  6. Step 6: Final answer
    x = 182,513.14

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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.