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Finding the Fourth Proportional to 121,545.97, 167,741.92 and 67,831.88

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Solution

The fourth proportional to 121,545.97, 167,741.92 and 67,831.88 is: 93,612.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,545.97 : 167,741.92 = 67,831.88 : x
  2. Step 2: Convert to fraction form
    121,545.97/167,741.92 = 67,831.88/x
  3. Step 3: Cross multiply
    121,545.97x = 167,741.92 × 67,831.88
  4. Step 4: Simplify right side
    121,545.97x = 11,378,250,038.18
  5. Step 5: Solve for x
    x = 11,378,250,038.18/121,545.97
  6. Step 6: Final answer
    x = 93,612.73

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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.