Home / 198,000.10-297,000.15-131,515.30

Finding the Fourth Proportional to 198,000.10, 297,000.15 and 131,515.30

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Solution

The fourth proportional to 198,000.10, 297,000.15 and 131,515.30 is: 197,272.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,000.10 : 297,000.15 = 131,515.30 : x
  2. Step 2: Convert to fraction form
    198,000.10/297,000.15 = 131,515.30/x
  3. Step 3: Cross multiply
    198,000.10x = 297,000.15 × 131,515.30
  4. Step 4: Simplify right side
    198,000.10x = 39,060,063,827.30
  5. Step 5: Solve for x
    x = 39,060,063,827.30/198,000.10
  6. Step 6: Final answer
    x = 197,272.95

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1.5x scale

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.