Home / 198,118.80-297,178.20-103,640.40

Finding the Fourth Proportional to 198,118.80, 297,178.20 and 103,640.40

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Solution

The fourth proportional to 198,118.80, 297,178.20 and 103,640.40 is: 155,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,118.80 : 297,178.20 = 103,640.40 : x
  2. Step 2: Convert to fraction form
    198,118.80/297,178.20 = 103,640.40/x
  3. Step 3: Cross multiply
    198,118.80x = 297,178.20 × 103,640.40
  4. Step 4: Simplify right side
    198,118.80x = 30,799,667,519.28
  5. Step 5: Solve for x
    x = 30,799,667,519.28/198,118.80
  6. Step 6: Final answer
    x = 155,460.60

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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.