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Finding the Fourth Proportional to 125,135.93, 187,702.31 and 30,366.89

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Solution

The fourth proportional to 125,135.93, 187,702.31 and 30,366.89 is: 45,549.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,135.93 : 187,702.31 = 30,366.89 : x
  2. Step 2: Convert to fraction form
    125,135.93/187,702.31 = 30,366.89/x
  3. Step 3: Cross multiply
    125,135.93x = 187,702.31 × 30,366.89
  4. Step 4: Simplify right side
    125,135.93x = 5,699,935,945.69
  5. Step 5: Solve for x
    x = 5,699,935,945.69/125,135.93
  6. Step 6: Final answer
    x = 45,549.95

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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.