Home / 106,301.90-159,452.85-81,418.70

Finding the Fourth Proportional to 106,301.90, 159,452.85 and 81,418.70

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Solution

The fourth proportional to 106,301.90, 159,452.85 and 81,418.70 is: 122,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,301.90 : 159,452.85 = 81,418.70 : x
  2. Step 2: Convert to fraction form
    106,301.90/159,452.85 = 81,418.70/x
  3. Step 3: Cross multiply
    106,301.90x = 159,452.85 × 81,418.70
  4. Step 4: Simplify right side
    106,301.90x = 12,982,443,758.30
  5. Step 5: Solve for x
    x = 12,982,443,758.30/106,301.90
  6. Step 6: Final answer
    x = 122,128.05

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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.