Home / 260,771.13-391,095.32-71,186.43

Finding the Fourth Proportional to 260,771.13, 391,095.32 and 71,186.43

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Solution

The fourth proportional to 260,771.13, 391,095.32 and 71,186.43 is: 106,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,771.13 : 391,095.32 = 71,186.43 : x
  2. Step 2: Convert to fraction form
    260,771.13/391,095.32 = 71,186.43/x
  3. Step 3: Cross multiply
    260,771.13x = 391,095.32 × 71,186.43
  4. Step 4: Simplify right side
    260,771.13x = 27,840,677,797.97
  5. Step 5: Solve for x
    x = 27,840,677,797.97/260,771.13
  6. Step 6: Final answer
    x = 106,762.88

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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.