Home / 153,882.09-212,367.96-85,912.43

Finding the Fourth Proportional to 153,882.09, 212,367.96 and 85,912.43

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Solution

The fourth proportional to 153,882.09, 212,367.96 and 85,912.43 is: 118,565.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,882.09 : 212,367.96 = 85,912.43 : x
  2. Step 2: Convert to fraction form
    153,882.09/212,367.96 = 85,912.43/x
  3. Step 3: Cross multiply
    153,882.09x = 212,367.96 × 85,912.43
  4. Step 4: Simplify right side
    153,882.09x = 18,245,046,435.90
  5. Step 5: Solve for x
    x = 18,245,046,435.90/153,882.09
  6. Step 6: Final answer
    x = 118,565.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.