Home / 215,149.44-296,928-123,280.89

Finding the Fourth Proportional to 215,149.44, 296,928 and 123,280.89

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Solution

The fourth proportional to 215,149.44, 296,928 and 123,280.89 is: 170,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,149.44 : 296,928 = 123,280.89 : x
  2. Step 2: Convert to fraction form
    215,149.44/296,928 = 123,280.89/x
  3. Step 3: Cross multiply
    215,149.44x = 296,928 × 123,280.89
  4. Step 4: Simplify right side
    215,149.44x = 36,605,548,105.92
  5. Step 5: Solve for x
    x = 36,605,548,105.92/215,149.44
  6. Step 6: Final answer
    x = 170,140.10

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1.5x scale

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.