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Finding the Fourth Proportional to 103,640.85, 155,552.40 and 61,468.20

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Solution

The fourth proportional to 103,640.85, 155,552.40 and 61,468.20 is: 92,256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.85 : 155,552.40 = 61,468.20 : x
  2. Step 2: Convert to fraction form
    103,640.85/155,552.40 = 61,468.20/x
  3. Step 3: Cross multiply
    103,640.85x = 155,552.40 × 61,468.20
  4. Step 4: Simplify right side
    103,640.85x = 9,561,526,033.68
  5. Step 5: Solve for x
    x = 9,561,526,033.68/103,640.85
  6. Step 6: Final answer
    x = 92,256.35

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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.