Home / 260,113.19-390,149.27-82,621.73

Finding the Fourth Proportional to 260,113.19, 390,149.27 and 82,621.73

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Solution

The fourth proportional to 260,113.19, 390,149.27 and 82,621.73 is: 123,926.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,113.19 : 390,149.27 = 82,621.73 : x
  2. Step 2: Convert to fraction form
    260,113.19/390,149.27 = 82,621.73/x
  3. Step 3: Cross multiply
    260,113.19x = 390,149.27 × 82,621.73
  4. Step 4: Simplify right side
    260,113.19x = 32,234,808,517.73
  5. Step 5: Solve for x
    x = 32,234,808,517.73/260,113.19
  6. Step 6: Final answer
    x = 123,926.08

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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.