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Finding the Fourth Proportional to 103,394.52, 142,680.84 and 63,175.60

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Solution

The fourth proportional to 103,394.52, 142,680.84 and 63,175.60 is: 87,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,394.52 : 142,680.84 = 63,175.60 : x
  2. Step 2: Convert to fraction form
    103,394.52/142,680.84 = 63,175.60/x
  3. Step 3: Cross multiply
    103,394.52x = 142,680.84 × 63,175.60
  4. Step 4: Simplify right side
    103,394.52x = 9,013,947,675.50
  5. Step 5: Solve for x
    x = 9,013,947,675.50/103,394.52
  6. Step 6: Final answer
    x = 87,180.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.