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Finding the Fourth Proportional to 121,616.28, 167,847.26 and 67,904.78

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Solution

The fourth proportional to 121,616.28, 167,847.26 and 67,904.78 is: 93,717.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,616.28 : 167,847.26 = 67,904.78 : x
  2. Step 2: Convert to fraction form
    121,616.28/167,847.26 = 67,904.78/x
  3. Step 3: Cross multiply
    121,616.28x = 167,847.26 × 67,904.78
  4. Step 4: Simplify right side
    121,616.28x = 11,397,630,085.14
  5. Step 5: Solve for x
    x = 11,397,630,085.14/121,616.28
  6. Step 6: Final answer
    x = 93,717.96

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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.