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Finding the Fourth Proportional to 121,587.52, 167,787.96 and 67,877.50

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Solution

The fourth proportional to 121,587.52, 167,787.96 and 67,877.50 is: 93,669.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,587.52 : 167,787.96 = 67,877.50 : x
  2. Step 2: Convert to fraction form
    121,587.52/167,787.96 = 67,877.50/x
  3. Step 3: Cross multiply
    121,587.52x = 167,787.96 × 67,877.50
  4. Step 4: Simplify right side
    121,587.52x = 11,389,027,254.90
  5. Step 5: Solve for x
    x = 11,389,027,254.90/121,587.52
  6. Step 6: Final answer
    x = 93,669.38

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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.