Home / 260,123.93-390,217.15-91,609.44

Finding the Fourth Proportional to 260,123.93, 390,217.15 and 91,609.44

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Solution

The fourth proportional to 260,123.93, 390,217.15 and 91,609.44 is: 137,425.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,123.93 : 390,217.15 = 91,609.44 : x
  2. Step 2: Convert to fraction form
    260,123.93/390,217.15 = 91,609.44/x
  3. Step 3: Cross multiply
    260,123.93x = 390,217.15 × 91,609.44
  4. Step 4: Simplify right side
    260,123.93x = 35,747,574,589.90
  5. Step 5: Solve for x
    x = 35,747,574,589.90/260,123.93
  6. Step 6: Final answer
    x = 137,425.17

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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.