Home / 132,378.72-198,567.84-57,489.12

Finding the Fourth Proportional to 132,378.72, 198,567.84 and 57,489.12

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Solution

The fourth proportional to 132,378.72, 198,567.84 and 57,489.12 is: 86,233.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,378.72 : 198,567.84 = 57,489.12 : x
  2. Step 2: Convert to fraction form
    132,378.72/198,567.84 = 57,489.12/x
  3. Step 3: Cross multiply
    132,378.72x = 198,567.84 × 57,489.12
  4. Step 4: Simplify right side
    132,378.72x = 11,415,490,381.90
  5. Step 5: Solve for x
    x = 11,415,490,381.90/132,378.72
  6. Step 6: Final answer
    x = 86,233.58

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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.