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Finding the Fourth Proportional to 126,502.58, 189,785.01 and 89,135.64

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Solution

The fourth proportional to 126,502.58, 189,785.01 and 89,135.64 is: 133,725.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,502.58 : 189,785.01 = 89,135.64 : x
  2. Step 2: Convert to fraction form
    126,502.58/189,785.01 = 89,135.64/x
  3. Step 3: Cross multiply
    126,502.58x = 189,785.01 × 89,135.64
  4. Step 4: Simplify right side
    126,502.58x = 16,916,608,328.76
  5. Step 5: Solve for x
    x = 16,916,608,328.76/126,502.58
  6. Step 6: Final answer
    x = 133,725.41

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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.