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Finding the Fourth Proportional to 121,595.87, 167,799.51 and 67,885.90

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Solution

The fourth proportional to 121,595.87, 167,799.51 and 67,885.90 is: 93,680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,595.87 : 167,799.51 = 67,885.90 : x
  2. Step 2: Convert to fraction form
    121,595.87/167,799.51 = 67,885.90/x
  3. Step 3: Cross multiply
    121,595.87x = 167,799.51 × 67,885.90
  4. Step 4: Simplify right side
    121,595.87x = 11,391,220,336.41
  5. Step 5: Solve for x
    x = 11,391,220,336.41/121,595.87
  6. Step 6: Final answer
    x = 93,680.98

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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.