Home / 126,451.20-174,507.72-72,736.20

Finding the Fourth Proportional to 126,451.20, 174,507.72 and 72,736.20

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Solution

The fourth proportional to 126,451.20, 174,507.72 and 72,736.20 is: 100,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,451.20 : 174,507.72 = 72,736.20 : x
  2. Step 2: Convert to fraction form
    126,451.20/174,507.72 = 72,736.20/x
  3. Step 3: Cross multiply
    126,451.20x = 174,507.72 × 72,736.20
  4. Step 4: Simplify right side
    126,451.20x = 12,693,028,423.46
  5. Step 5: Solve for x
    x = 12,693,028,423.46/126,451.20
  6. Step 6: Final answer
    x = 100,378.87

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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.