Home / 260,681.32-391,010.20-71,141

Finding the Fourth Proportional to 260,681.32, 391,010.20 and 71,141

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Solution

The fourth proportional to 260,681.32, 391,010.20 and 71,141 is: 106,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,681.32 : 391,010.20 = 71,141 : x
  2. Step 2: Convert to fraction form
    260,681.32/391,010.20 = 71,141/x
  3. Step 3: Cross multiply
    260,681.32x = 391,010.20 × 71,141
  4. Step 4: Simplify right side
    260,681.32x = 27,816,856,638.20
  5. Step 5: Solve for x
    x = 27,816,856,638.20/260,681.32
  6. Step 6: Final answer
    x = 106,708.29

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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.