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Finding the Fourth Proportional to 123,103.52, 169,855.44 and 75,353.12

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Solution

The fourth proportional to 123,103.52, 169,855.44 and 75,353.12 is: 103,970.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,103.52 : 169,855.44 = 75,353.12 : x
  2. Step 2: Convert to fraction form
    123,103.52/169,855.44 = 75,353.12/x
  3. Step 3: Cross multiply
    123,103.52x = 169,855.44 × 75,353.12
  4. Step 4: Simplify right side
    123,103.52x = 12,799,137,352.97
  5. Step 5: Solve for x
    x = 12,799,137,352.97/123,103.52
  6. Step 6: Final answer
    x = 103,970.52

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1.5x scale

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.