Home / 132,138.40-198,233.20-66,474.40

Finding the Fourth Proportional to 132,138.40, 198,233.20 and 66,474.40

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Solution

The fourth proportional to 132,138.40, 198,233.20 and 66,474.40 is: 99,724.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,138.40 : 198,233.20 = 66,474.40 : x
  2. Step 2: Convert to fraction form
    132,138.40/198,233.20 = 66,474.40/x
  3. Step 3: Cross multiply
    132,138.40x = 198,233.20 × 66,474.40
  4. Step 4: Simplify right side
    132,138.40x = 13,177,433,030.08
  5. Step 5: Solve for x
    x = 13,177,433,030.08/132,138.40
  6. Step 6: Final answer
    x = 99,724.48

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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.