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Finding the Fourth Proportional to 125,064.78, 187,549.32 and 61,863.21

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Solution

The fourth proportional to 125,064.78, 187,549.32 and 61,863.21 is: 92,771.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,064.78 : 187,549.32 = 61,863.21 : x
  2. Step 2: Convert to fraction form
    125,064.78/187,549.32 = 61,863.21/x
  3. Step 3: Cross multiply
    125,064.78x = 187,549.32 × 61,863.21
  4. Step 4: Simplify right side
    125,064.78x = 11,602,402,968.52
  5. Step 5: Solve for x
    x = 11,602,402,968.52/125,064.78
  6. Step 6: Final answer
    x = 92,771.15

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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.