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Finding the Fourth Proportional to 121,311.89, 167,415.56 and 67,596.95

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Solution

The fourth proportional to 121,311.89, 167,415.56 and 67,596.95 is: 93,286.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,311.89 : 167,415.56 = 67,596.95 : x
  2. Step 2: Convert to fraction form
    121,311.89/167,415.56 = 67,596.95/x
  3. Step 3: Cross multiply
    121,311.89x = 167,415.56 × 67,596.95
  4. Step 4: Simplify right side
    121,311.89x = 11,316,780,063.48
  5. Step 5: Solve for x
    x = 11,316,780,063.48/121,311.89
  6. Step 6: Final answer
    x = 93,286.66

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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.