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Finding the Fourth Proportional to 140,354.61, 210,532.83 and 56,121.85

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Solution

The fourth proportional to 140,354.61, 210,532.83 and 56,121.85 is: 84,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,354.61 : 210,532.83 = 56,121.85 : x
  2. Step 2: Convert to fraction form
    140,354.61/210,532.83 = 56,121.85/x
  3. Step 3: Cross multiply
    140,354.61x = 210,532.83 × 56,121.85
  4. Step 4: Simplify right side
    140,354.61x = 11,815,491,958.04
  5. Step 5: Solve for x
    x = 11,815,491,958.04/140,354.61
  6. Step 6: Final answer
    x = 84,183.14

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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.