Home / 83,679.06-126,143.50-76,585.88

Finding the Fourth Proportional to 83,679.06, 126,143.50 and 76,585.88

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Solution

The fourth proportional to 83,679.06, 126,143.50 and 76,585.88 is: 115,450.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,679.06 : 126,143.50 = 76,585.88 : x
  2. Step 2: Convert to fraction form
    83,679.06/126,143.50 = 76,585.88/x
  3. Step 3: Cross multiply
    83,679.06x = 126,143.50 × 76,585.88
  4. Step 4: Simplify right side
    83,679.06x = 9,660,810,953.78
  5. Step 5: Solve for x
    x = 9,660,810,953.78/83,679.06
  6. Step 6: Final answer
    x = 115,450.76

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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.