Home / 198,988.32-274,515.12-134,436.78

Finding the Fourth Proportional to 198,988.32, 274,515.12 and 134,436.78

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Solution

The fourth proportional to 198,988.32, 274,515.12 and 134,436.78 is: 185,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,988.32 : 274,515.12 = 134,436.78 : x
  2. Step 2: Convert to fraction form
    198,988.32/274,515.12 = 134,436.78/x
  3. Step 3: Cross multiply
    198,988.32x = 274,515.12 × 134,436.78
  4. Step 4: Simplify right side
    198,988.32x = 36,904,928,794.11
  5. Step 5: Solve for x
    x = 36,904,928,794.11/198,988.32
  6. Step 6: Final answer
    x = 185,462.79

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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.