Home / 212,947.20-319,149.45-113,155.20

Finding the Fourth Proportional to 212,947.20, 319,149.45 and 113,155.20

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Solution

The fourth proportional to 212,947.20, 319,149.45 and 113,155.20 is: 169,588.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,947.20 : 319,149.45 = 113,155.20 : x
  2. Step 2: Convert to fraction form
    212,947.20/319,149.45 = 113,155.20/x
  3. Step 3: Cross multiply
    212,947.20x = 319,149.45 × 113,155.20
  4. Step 4: Simplify right side
    212,947.20x = 36,113,419,844.64
  5. Step 5: Solve for x
    x = 36,113,419,844.64/212,947.20
  6. Step 6: Final answer
    x = 169,588.61

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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.