Home / 281,217.13-421,887.66-81,545.85

Finding the Fourth Proportional to 281,217.13, 421,887.66 and 81,545.85

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Solution

The fourth proportional to 281,217.13, 421,887.66 and 81,545.85 is: 122,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,217.13 : 421,887.66 = 81,545.85 : x
  2. Step 2: Convert to fraction form
    281,217.13/421,887.66 = 81,545.85/x
  3. Step 3: Cross multiply
    281,217.13x = 421,887.66 × 81,545.85
  4. Step 4: Simplify right side
    281,217.13x = 34,403,188,630.25
  5. Step 5: Solve for x
    x = 34,403,188,630.25/281,217.13
  6. Step 6: Final answer
    x = 122,336.75

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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.