Home / 83,931.28-126,356.38-76,582.96

Finding the Fourth Proportional to 83,931.28, 126,356.38 and 76,582.96

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Solution

The fourth proportional to 83,931.28, 126,356.38 and 76,582.96 is: 115,293.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,931.28 : 126,356.38 = 76,582.96 : x
  2. Step 2: Convert to fraction form
    83,931.28/126,356.38 = 76,582.96/x
  3. Step 3: Cross multiply
    83,931.28x = 126,356.38 × 76,582.96
  4. Step 4: Simplify right side
    83,931.28x = 9,676,745,595.28
  5. Step 5: Solve for x
    x = 9,676,745,595.28/83,931.28
  6. Step 6: Final answer
    x = 115,293.67

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Double scale
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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.