Home / 198,629.76-297,777-86,225.16

Finding the Fourth Proportional to 198,629.76, 297,777 and 86,225.16

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Solution

The fourth proportional to 198,629.76, 297,777 and 86,225.16 is: 129,264.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,629.76 : 297,777 = 86,225.16 : x
  2. Step 2: Convert to fraction form
    198,629.76/297,777 = 86,225.16/x
  3. Step 3: Cross multiply
    198,629.76x = 297,777 × 86,225.16
  4. Step 4: Simplify right side
    198,629.76x = 25,675,869,469.32
  5. Step 5: Solve for x
    x = 25,675,869,469.32/198,629.76
  6. Step 6: Final answer
    x = 129,264.97

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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.