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Finding the Fourth Proportional to 140,247.30, 210,472.44 and 54,870.78

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Solution

The fourth proportional to 140,247.30, 210,472.44 and 54,870.78 is: 82,345.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,247.30 : 210,472.44 = 54,870.78 : x
  2. Step 2: Convert to fraction form
    140,247.30/210,472.44 = 54,870.78/x
  3. Step 3: Cross multiply
    140,247.30x = 210,472.44 × 54,870.78
  4. Step 4: Simplify right side
    140,247.30x = 11,548,786,951.30
  5. Step 5: Solve for x
    x = 11,548,786,951.30/140,247.30
  6. Step 6: Final answer
    x = 82,345.88

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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.