Home / 212,979.20-319,197.45-113,187.20

Finding the Fourth Proportional to 212,979.20, 319,197.45 and 113,187.20

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Solution

The fourth proportional to 212,979.20, 319,197.45 and 113,187.20 is: 169,636.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,979.20 : 319,197.45 = 113,187.20 : x
  2. Step 2: Convert to fraction form
    212,979.20/319,197.45 = 113,187.20/x
  3. Step 3: Cross multiply
    212,979.20x = 319,197.45 × 113,187.20
  4. Step 4: Simplify right side
    212,979.20x = 36,129,065,612.64
  5. Step 5: Solve for x
    x = 36,129,065,612.64/212,979.20
  6. Step 6: Final answer
    x = 169,636.59

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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.