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Finding the Fourth Proportional to 124,375.72, 171,638.50 and 67,787.08

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Solution

The fourth proportional to 124,375.72, 171,638.50 and 67,787.08 is: 93,546.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,375.72 : 171,638.50 = 67,787.08 : x
  2. Step 2: Convert to fraction form
    124,375.72/171,638.50 = 67,787.08/x
  3. Step 3: Cross multiply
    124,375.72x = 171,638.50 × 67,787.08
  4. Step 4: Simplify right side
    124,375.72x = 11,634,872,730.58
  5. Step 5: Solve for x
    x = 11,634,872,730.58/124,375.72
  6. Step 6: Final answer
    x = 93,546.17

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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.