Home / 220,085.40-329,982.30-79,825.80

Finding the Fourth Proportional to 220,085.40, 329,982.30 and 79,825.80

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Solution

The fourth proportional to 220,085.40, 329,982.30 and 79,825.80 is: 119,685.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,085.40 : 329,982.30 = 79,825.80 : x
  2. Step 2: Convert to fraction form
    220,085.40/329,982.30 = 79,825.80/x
  3. Step 3: Cross multiply
    220,085.40x = 329,982.30 × 79,825.80
  4. Step 4: Simplify right side
    220,085.40x = 26,341,101,083.34
  5. Step 5: Solve for x
    x = 26,341,101,083.34/220,085.40
  6. Step 6: Final answer
    x = 119,685.82

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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.