Home / 198,617.20-297,666.60-91,988.80

Finding the Fourth Proportional to 198,617.20, 297,666.60 and 91,988.80

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Solution

The fourth proportional to 198,617.20, 297,666.60 and 91,988.80 is: 137,863.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,617.20 : 297,666.60 = 91,988.80 : x
  2. Step 2: Convert to fraction form
    198,617.20/297,666.60 = 91,988.80/x
  3. Step 3: Cross multiply
    198,617.20x = 297,666.60 × 91,988.80
  4. Step 4: Simplify right side
    198,617.20x = 27,381,993,334.08
  5. Step 5: Solve for x
    x = 27,381,993,334.08/198,617.20
  6. Step 6: Final answer
    x = 137,863.15

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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.