Home / 205,879.10-309,337.05-131,035.10

Finding the Fourth Proportional to 205,879.10, 309,337.05 and 131,035.10

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Solution

The fourth proportional to 205,879.10, 309,337.05 and 131,035.10 is: 196,882.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,879.10 : 309,337.05 = 131,035.10 : x
  2. Step 2: Convert to fraction form
    205,879.10/309,337.05 = 131,035.10/x
  3. Step 3: Cross multiply
    205,879.10x = 309,337.05 × 131,035.10
  4. Step 4: Simplify right side
    205,879.10x = 40,534,011,280.46
  5. Step 5: Solve for x
    x = 40,534,011,280.46/205,879.10
  6. Step 6: Final answer
    x = 196,882.59

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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.