Home / 89,717.10-134,575.65-68,721.90

Finding the Fourth Proportional to 89,717.10, 134,575.65 and 68,721.90

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Solution

The fourth proportional to 89,717.10, 134,575.65 and 68,721.90 is: 103,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,717.10 : 134,575.65 = 68,721.90 : x
  2. Step 2: Convert to fraction form
    89,717.10/134,575.65 = 68,721.90/x
  3. Step 3: Cross multiply
    89,717.10x = 134,575.65 × 68,721.90
  4. Step 4: Simplify right side
    89,717.10x = 9,248,294,361.74
  5. Step 5: Solve for x
    x = 9,248,294,361.74/89,717.10
  6. Step 6: Final answer
    x = 103,082.85

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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.