Home / 132,886.18-199,255.31-78,872.81

Finding the Fourth Proportional to 132,886.18, 199,255.31 and 78,872.81

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Solution

The fourth proportional to 132,886.18, 199,255.31 and 78,872.81 is: 118,265.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,886.18 : 199,255.31 = 78,872.81 : x
  2. Step 2: Convert to fraction form
    132,886.18/199,255.31 = 78,872.81/x
  3. Step 3: Cross multiply
    132,886.18x = 199,255.31 × 78,872.81
  4. Step 4: Simplify right side
    132,886.18x = 15,715,825,812.76
  5. Step 5: Solve for x
    x = 15,715,825,812.76/132,886.18
  6. Step 6: Final answer
    x = 118,265.32

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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.