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Finding the Fourth Proportional to 121,545.22, 167,740.88 and 67,831.13

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Solution

The fourth proportional to 121,545.22, 167,740.88 and 67,831.13 is: 93,611.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,545.22 : 167,740.88 = 67,831.13 : x
  2. Step 2: Convert to fraction form
    121,545.22/167,740.88 = 67,831.13/x
  3. Step 3: Cross multiply
    121,545.22x = 167,740.88 × 67,831.13
  4. Step 4: Simplify right side
    121,545.22x = 11,378,054,026.52
  5. Step 5: Solve for x
    x = 11,378,054,026.52/121,545.22
  6. Step 6: Final answer
    x = 93,611.70

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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.