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Finding the Fourth Proportional to 123,943.68, 171,035.28 and 67,354.64

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Solution

The fourth proportional to 123,943.68, 171,035.28 and 67,354.64 is: 92,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,943.68 : 171,035.28 = 67,354.64 : x
  2. Step 2: Convert to fraction form
    123,943.68/171,035.28 = 67,354.64/x
  3. Step 3: Cross multiply
    123,943.68x = 171,035.28 × 67,354.64
  4. Step 4: Simplify right side
    123,943.68x = 11,520,019,711.70
  5. Step 5: Solve for x
    x = 11,520,019,711.70/123,943.68
  6. Step 6: Final answer
    x = 92,945.60

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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.