Home / 131,454.20-197,181.30-123,678.20

Finding the Fourth Proportional to 131,454.20, 197,181.30 and 123,678.20

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Solution

The fourth proportional to 131,454.20, 197,181.30 and 123,678.20 is: 185,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,454.20 : 197,181.30 = 123,678.20 : x
  2. Step 2: Convert to fraction form
    131,454.20/197,181.30 = 123,678.20/x
  3. Step 3: Cross multiply
    131,454.20x = 197,181.30 × 123,678.20
  4. Step 4: Simplify right side
    131,454.20x = 24,387,028,257.66
  5. Step 5: Solve for x
    x = 24,387,028,257.66/131,454.20
  6. Step 6: Final answer
    x = 185,517.30

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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.