Home / 132,438.48-198,661.32-38,947.20

Finding the Fourth Proportional to 132,438.48, 198,661.32 and 38,947.20

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Solution

The fourth proportional to 132,438.48, 198,661.32 and 38,947.20 is: 58,421.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,438.48 : 198,661.32 = 38,947.20 : x
  2. Step 2: Convert to fraction form
    132,438.48/198,661.32 = 38,947.20/x
  3. Step 3: Cross multiply
    132,438.48x = 198,661.32 × 38,947.20
  4. Step 4: Simplify right side
    132,438.48x = 7,737,302,162.30
  5. Step 5: Solve for x
    x = 7,737,302,162.30/132,438.48
  6. Step 6: Final answer
    x = 58,421.86

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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.