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Finding the Fourth Proportional to 123,487.11, 185,209.20 and 34,719.55

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Solution

The fourth proportional to 123,487.11, 185,209.20 and 34,719.55 is: 52,073.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,487.11 : 185,209.20 = 34,719.55 : x
  2. Step 2: Convert to fraction form
    123,487.11/185,209.20 = 34,719.55/x
  3. Step 3: Cross multiply
    123,487.11x = 185,209.20 × 34,719.55
  4. Step 4: Simplify right side
    123,487.11x = 6,430,379,616.84
  5. Step 5: Solve for x
    x = 6,430,379,616.84/123,487.11
  6. Step 6: Final answer
    x = 52,073.29

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1.5x scale

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.