Home / 220,199.67-303,861.15-129,538.10

Finding the Fourth Proportional to 220,199.67, 303,861.15 and 129,538.10

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Solution

The fourth proportional to 220,199.67, 303,861.15 and 129,538.10 is: 178,754.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,199.67 : 303,861.15 = 129,538.10 : x
  2. Step 2: Convert to fraction form
    220,199.67/303,861.15 = 129,538.10/x
  3. Step 3: Cross multiply
    220,199.67x = 303,861.15 × 129,538.10
  4. Step 4: Simplify right side
    220,199.67x = 39,361,596,794.47
  5. Step 5: Solve for x
    x = 39,361,596,794.47/220,199.67
  6. Step 6: Final answer
    x = 178,754.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.