Home / 138,586.68-206,449.83-129,981.24

Finding the Fourth Proportional to 138,586.68, 206,449.83 and 129,981.24

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Solution

The fourth proportional to 138,586.68, 206,449.83 and 129,981.24 is: 193,630.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,586.68 : 206,449.83 = 129,981.24 : x
  2. Step 2: Convert to fraction form
    138,586.68/206,449.83 = 129,981.24/x
  3. Step 3: Cross multiply
    138,586.68x = 206,449.83 × 129,981.24
  4. Step 4: Simplify right side
    138,586.68x = 26,834,604,901.19
  5. Step 5: Solve for x
    x = 26,834,604,901.19/138,586.68
  6. Step 6: Final answer
    x = 193,630.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.