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Finding the Fourth Proportional to 126,502.60, 189,753.90 and 121,253.80

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Solution

The fourth proportional to 126,502.60, 189,753.90 and 121,253.80 is: 181,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,502.60 : 189,753.90 = 121,253.80 : x
  2. Step 2: Convert to fraction form
    126,502.60/189,753.90 = 121,253.80/x
  3. Step 3: Cross multiply
    126,502.60x = 189,753.90 × 121,253.80
  4. Step 4: Simplify right side
    126,502.60x = 23,008,381,439.82
  5. Step 5: Solve for x
    x = 23,008,381,439.82/126,502.60
  6. Step 6: Final answer
    x = 181,880.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.