Home / 83,680.06-126,145.01-76,586.88

Finding the Fourth Proportional to 83,680.06, 126,145.01 and 76,586.88

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Solution

The fourth proportional to 83,680.06, 126,145.01 and 76,586.88 is: 115,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,680.06 : 126,145.01 = 76,586.88 : x
  2. Step 2: Convert to fraction form
    83,680.06/126,145.01 = 76,586.88/x
  3. Step 3: Cross multiply
    83,680.06x = 126,145.01 × 76,586.88
  4. Step 4: Simplify right side
    83,680.06x = 9,661,052,743.47
  5. Step 5: Solve for x
    x = 9,661,052,743.47/83,680.06
  6. Step 6: Final answer
    x = 115,452.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.