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Finding the Fourth Proportional to 124,702.35, 187,127.28 and 45,871.89

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Solution

The fourth proportional to 124,702.35, 187,127.28 and 45,871.89 is: 68,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,702.35 : 187,127.28 = 45,871.89 : x
  2. Step 2: Convert to fraction form
    124,702.35/187,127.28 = 45,871.89/x
  3. Step 3: Cross multiply
    124,702.35x = 187,127.28 × 45,871.89
  4. Step 4: Simplify right side
    124,702.35x = 8,583,882,004.16
  5. Step 5: Solve for x
    x = 8,583,882,004.16/124,702.35
  6. Step 6: Final answer
    x = 68,834.97

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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.