Home / 207,878.20-311,999.55-123,532.90

Finding the Fourth Proportional to 207,878.20, 311,999.55 and 123,532.90

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Solution

The fourth proportional to 207,878.20, 311,999.55 and 123,532.90 is: 185,407.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,878.20 : 311,999.55 = 123,532.90 : x
  2. Step 2: Convert to fraction form
    207,878.20/311,999.55 = 123,532.90/x
  3. Step 3: Cross multiply
    207,878.20x = 311,999.55 × 123,532.90
  4. Step 4: Simplify right side
    207,878.20x = 38,542,209,210.20
  5. Step 5: Solve for x
    x = 38,542,209,210.20/207,878.20
  6. Step 6: Final answer
    x = 185,407.65

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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.