Home / 260,487.81-390,778.19-92,105.90

Finding the Fourth Proportional to 260,487.81, 390,778.19 and 92,105.90

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Solution

The fourth proportional to 260,487.81, 390,778.19 and 92,105.90 is: 138,175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,487.81 : 390,778.19 = 92,105.90 : x
  2. Step 2: Convert to fraction form
    260,487.81/390,778.19 = 92,105.90/x
  3. Step 3: Cross multiply
    260,487.81x = 390,778.19 × 92,105.90
  4. Step 4: Simplify right side
    260,487.81x = 35,992,976,890.32
  5. Step 5: Solve for x
    x = 35,992,976,890.32/260,487.81
  6. Step 6: Final answer
    x = 138,175.28

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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.