Home / 106,531.00-159,644.25-78,229.06

Finding the Fourth Proportional to 106,531.00, 159,644.25 and 78,229.06

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Solution

The fourth proportional to 106,531.00, 159,644.25 and 78,229.06 is: 117,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,531.00 : 159,644.25 = 78,229.06 : x
  2. Step 2: Convert to fraction form
    106,531.00/159,644.25 = 78,229.06/x
  3. Step 3: Cross multiply
    106,531.00x = 159,644.25 × 78,229.06
  4. Step 4: Simplify right side
    106,531.00x = 12,488,819,212.79
  5. Step 5: Solve for x
    x = 12,488,819,212.79/106,531.00
  6. Step 6: Final answer
    x = 117,231.79

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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.