Home / 126,479.56-174,626.58-78,752.20

Finding the Fourth Proportional to 126,479.56, 174,626.58 and 78,752.20

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Solution

The fourth proportional to 126,479.56, 174,626.58 and 78,752.20 is: 108,730.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,479.56 : 174,626.58 = 78,752.20 : x
  2. Step 2: Convert to fraction form
    126,479.56/174,626.58 = 78,752.20/x
  3. Step 3: Cross multiply
    126,479.56x = 174,626.58 × 78,752.20
  4. Step 4: Simplify right side
    126,479.56x = 13,752,227,353.48
  5. Step 5: Solve for x
    x = 13,752,227,353.48/126,479.56
  6. Step 6: Final answer
    x = 108,730.83

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1.5x scale

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.