Home / 132,811.20-198,925.20-115,315.20

Finding the Fourth Proportional to 132,811.20, 198,925.20 and 115,315.20

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Solution

The fourth proportional to 132,811.20, 198,925.20 and 115,315.20 is: 172,719.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,811.20 : 198,925.20 = 115,315.20 : x
  2. Step 2: Convert to fraction form
    132,811.20/198,925.20 = 115,315.20/x
  3. Step 3: Cross multiply
    132,811.20x = 198,925.20 × 115,315.20
  4. Step 4: Simplify right side
    132,811.20x = 22,939,099,223.04
  5. Step 5: Solve for x
    x = 22,939,099,223.04/132,811.20
  6. Step 6: Final answer
    x = 172,719.61

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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.