Home / 206,119.40-284,583.85-128,713.30

Finding the Fourth Proportional to 206,119.40, 284,583.85 and 128,713.30

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Solution

The fourth proportional to 206,119.40, 284,583.85 and 128,713.30 is: 177,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,119.40 : 284,583.85 = 128,713.30 : x
  2. Step 2: Convert to fraction form
    206,119.40/284,583.85 = 128,713.30/x
  3. Step 3: Cross multiply
    206,119.40x = 284,583.85 × 128,713.30
  4. Step 4: Simplify right side
    206,119.40x = 36,629,726,460.21
  5. Step 5: Solve for x
    x = 36,629,726,460.21/206,119.40
  6. Step 6: Final answer
    x = 177,711.21

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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.