Home / 206,236.25-284,543.34-129,831.61

Finding the Fourth Proportional to 206,236.25, 284,543.34 and 129,831.61

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Solution

The fourth proportional to 206,236.25, 284,543.34 and 129,831.61 is: 179,128.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,236.25 : 284,543.34 = 129,831.61 : x
  2. Step 2: Convert to fraction form
    206,236.25/284,543.34 = 129,831.61/x
  3. Step 3: Cross multiply
    206,236.25x = 284,543.34 × 129,831.61
  4. Step 4: Simplify right side
    206,236.25x = 36,942,719,946.98
  5. Step 5: Solve for x
    x = 36,942,719,946.98/206,236.25
  6. Step 6: Final answer
    x = 179,128.16

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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.