Home / 206,381.22-284,685.12-129,778.81

Finding the Fourth Proportional to 206,381.22, 284,685.12 and 129,778.81

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Solution

The fourth proportional to 206,381.22, 284,685.12 and 129,778.81 is: 179,018.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,381.22 : 284,685.12 = 129,778.81 : x
  2. Step 2: Convert to fraction form
    206,381.22/284,685.12 = 129,778.81/x
  3. Step 3: Cross multiply
    206,381.22x = 284,685.12 × 129,778.81
  4. Step 4: Simplify right side
    206,381.22x = 36,946,096,098.31
  5. Step 5: Solve for x
    x = 36,946,096,098.31/206,381.22
  6. Step 6: Final answer
    x = 179,018.69

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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.