Home / 198,950.28-298,337.86-105,434.12

Finding the Fourth Proportional to 198,950.28, 298,337.86 and 105,434.12

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Solution

The fourth proportional to 198,950.28, 298,337.86 and 105,434.12 is: 158,104.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,950.28 : 298,337.86 = 105,434.12 : x
  2. Step 2: Convert to fraction form
    198,950.28/298,337.86 = 105,434.12/x
  3. Step 3: Cross multiply
    198,950.28x = 298,337.86 × 105,434.12
  4. Step 4: Simplify right side
    198,950.28x = 31,454,989,731.78
  5. Step 5: Solve for x
    x = 31,454,989,731.78/198,950.28
  6. Step 6: Final answer
    x = 158,104.78

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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.