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Finding the Fourth Proportional to 125,023.26, 187,476.57 and 72,447.78

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Solution

The fourth proportional to 125,023.26, 187,476.57 and 72,447.78 is: 108,637.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,023.26 : 187,476.57 = 72,447.78 : x
  2. Step 2: Convert to fraction form
    125,023.26/187,476.57 = 72,447.78/x
  3. Step 3: Cross multiply
    125,023.26x = 187,476.57 × 72,447.78
  4. Step 4: Simplify right side
    125,023.26x = 13,582,261,298.51
  5. Step 5: Solve for x
    x = 13,582,261,298.51/125,023.26
  6. Step 6: Final answer
    x = 108,637.88

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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.