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Finding the Fourth Proportional to 125,190.96, 187,798.08 and 40,951.66

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Solution

The fourth proportional to 125,190.96, 187,798.08 and 40,951.66 is: 61,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,190.96 : 187,798.08 = 40,951.66 : x
  2. Step 2: Convert to fraction form
    125,190.96/187,798.08 = 40,951.66/x
  3. Step 3: Cross multiply
    125,190.96x = 187,798.08 × 40,951.66
  4. Step 4: Simplify right side
    125,190.96x = 7,690,643,120.81
  5. Step 5: Solve for x
    x = 7,690,643,120.81/125,190.96
  6. Step 6: Final answer
    x = 61,431.30

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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.