Home / 154,000.30-231,000.45-87,414.70

Finding the Fourth Proportional to 154,000.30, 231,000.45 and 87,414.70

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Solution

The fourth proportional to 154,000.30, 231,000.45 and 87,414.70 is: 131,122.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,000.30 : 231,000.45 = 87,414.70 : x
  2. Step 2: Convert to fraction form
    154,000.30/231,000.45 = 87,414.70/x
  3. Step 3: Cross multiply
    154,000.30x = 231,000.45 × 87,414.70
  4. Step 4: Simplify right side
    154,000.30x = 20,192,835,036.62
  5. Step 5: Solve for x
    x = 20,192,835,036.62/154,000.30
  6. Step 6: Final answer
    x = 131,122.05

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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.