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Finding the Fourth Proportional to 123,974, 171,084.32 and 67,385.24

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Solution

The fourth proportional to 123,974, 171,084.32 and 67,385.24 is: 92,991.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,974 : 171,084.32 = 67,385.24 : x
  2. Step 2: Convert to fraction form
    123,974/171,084.32 = 67,385.24/x
  3. Step 3: Cross multiply
    123,974x = 171,084.32 × 67,385.24
  4. Step 4: Simplify right side
    123,974x = 11,528,557,963.44
  5. Step 5: Solve for x
    x = 11,528,557,963.44/123,974
  6. Step 6: Final answer
    x = 92,991.74

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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.