Home / 212,904.45-319,085.33-113,112.45

Finding the Fourth Proportional to 212,904.45, 319,085.33 and 113,112.45

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Solution

The fourth proportional to 212,904.45, 319,085.33 and 113,112.45 is: 169,524.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,904.45 : 319,085.33 = 113,112.45 : x
  2. Step 2: Convert to fraction form
    212,904.45/319,085.33 = 113,112.45/x
  3. Step 3: Cross multiply
    212,904.45x = 319,085.33 × 113,112.45
  4. Step 4: Simplify right side
    212,904.45x = 36,092,522,869.80
  5. Step 5: Solve for x
    x = 36,092,522,869.80/212,904.45
  6. Step 6: Final answer
    x = 169,524.51

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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.