Home / 207,880.20-312,002.55-123,534.90

Finding the Fourth Proportional to 207,880.20, 312,002.55 and 123,534.90

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Solution

The fourth proportional to 207,880.20, 312,002.55 and 123,534.90 is: 185,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,880.20 : 312,002.55 = 123,534.90 : x
  2. Step 2: Convert to fraction form
    207,880.20/312,002.55 = 123,534.90/x
  3. Step 3: Cross multiply
    207,880.20x = 312,002.55 × 123,534.90
  4. Step 4: Simplify right side
    207,880.20x = 38,543,203,814.00
  5. Step 5: Solve for x
    x = 38,543,203,814.00/207,880.20
  6. Step 6: Final answer
    x = 185,410.65

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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.