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Finding the Fourth Proportional to 125,458.28, 187,941.37 and 72,757.05

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Solution

The fourth proportional to 125,458.28, 187,941.37 and 72,757.05 is: 108,992.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,458.28 : 187,941.37 = 72,757.05 : x
  2. Step 2: Convert to fraction form
    125,458.28/187,941.37 = 72,757.05/x
  3. Step 3: Cross multiply
    125,458.28x = 187,941.37 × 72,757.05
  4. Step 4: Simplify right side
    125,458.28x = 13,674,059,654.16
  5. Step 5: Solve for x
    x = 13,674,059,654.16/125,458.28
  6. Step 6: Final answer
    x = 108,992.88

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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.