Home / 198,610.20-297,656.10-91,981.80

Finding the Fourth Proportional to 198,610.20, 297,656.10 and 91,981.80

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Solution

The fourth proportional to 198,610.20, 297,656.10 and 91,981.80 is: 137,852.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,610.20 : 297,656.10 = 91,981.80 : x
  2. Step 2: Convert to fraction form
    198,610.20/297,656.10 = 91,981.80/x
  3. Step 3: Cross multiply
    198,610.20x = 297,656.10 × 91,981.80
  4. Step 4: Simplify right side
    198,610.20x = 27,378,943,858.98
  5. Step 5: Solve for x
    x = 27,378,943,858.98/198,610.20
  6. Step 6: Final answer
    x = 137,852.66

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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.