Home / 132,032.32-198,116.56-87,689.76

Finding the Fourth Proportional to 132,032.32, 198,116.56 and 87,689.76

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Solution

The fourth proportional to 132,032.32, 198,116.56 and 87,689.76 is: 131,579.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,032.32 : 198,116.56 = 87,689.76 : x
  2. Step 2: Convert to fraction form
    132,032.32/198,116.56 = 87,689.76/x
  3. Step 3: Cross multiply
    132,032.32x = 198,116.56 × 87,689.76
  4. Step 4: Simplify right side
    132,032.32x = 17,372,793,598.43
  5. Step 5: Solve for x
    x = 17,372,793,598.43/132,032.32
  6. Step 6: Final answer
    x = 131,579.86

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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.