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Finding the Fourth Proportional to 121,166.71, 167,211.30 and 66,723.94

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Solution

The fourth proportional to 121,166.71, 167,211.30 and 66,723.94 is: 92,079.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,166.71 : 167,211.30 = 66,723.94 : x
  2. Step 2: Convert to fraction form
    121,166.71/167,211.30 = 66,723.94/x
  3. Step 3: Cross multiply
    121,166.71x = 167,211.30 × 66,723.94
  4. Step 4: Simplify right side
    121,166.71x = 11,156,997,207.75
  5. Step 5: Solve for x
    x = 11,156,997,207.75/121,166.71
  6. Step 6: Final answer
    x = 92,079.73

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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.