Home / 103,690.20-155,535.66-28,814.52

Finding the Fourth Proportional to 103,690.20, 155,535.66 and 28,814.52

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Solution

The fourth proportional to 103,690.20, 155,535.66 and 28,814.52 is: 43,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.20 : 155,535.66 = 28,814.52 : x
  2. Step 2: Convert to fraction form
    103,690.20/155,535.66 = 28,814.52/x
  3. Step 3: Cross multiply
    103,690.20x = 155,535.66 × 28,814.52
  4. Step 4: Simplify right side
    103,690.20x = 4,481,685,385.78
  5. Step 5: Solve for x
    x = 4,481,685,385.78/103,690.20
  6. Step 6: Final answer
    x = 43,221.88

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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.