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Finding the Fourth Proportional to 125,129.43, 187,723.58 and 36,380.34

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Solution

The fourth proportional to 125,129.43, 187,723.58 and 36,380.34 is: 54,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,129.43 : 187,723.58 = 36,380.34 : x
  2. Step 2: Convert to fraction form
    125,129.43/187,723.58 = 36,380.34/x
  3. Step 3: Cross multiply
    125,129.43x = 187,723.58 × 36,380.34
  4. Step 4: Simplify right side
    125,129.43x = 6,829,447,484.52
  5. Step 5: Solve for x
    x = 6,829,447,484.52/125,129.43
  6. Step 6: Final answer
    x = 54,579.07

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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.