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Finding the Fourth Proportional to 126,471.87, 189,801.36 and 59,912.19

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Solution

The fourth proportional to 126,471.87, 189,801.36 and 59,912.19 is: 89,912.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,471.87 : 189,801.36 = 59,912.19 : x
  2. Step 2: Convert to fraction form
    126,471.87/189,801.36 = 59,912.19/x
  3. Step 3: Cross multiply
    126,471.87x = 189,801.36 × 59,912.19
  4. Step 4: Simplify right side
    126,471.87x = 11,371,415,142.58
  5. Step 5: Solve for x
    x = 11,371,415,142.58/126,471.87
  6. Step 6: Final answer
    x = 89,912.60

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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.