Home / 138,883.38-208,334.88-68,743.86

Finding the Fourth Proportional to 138,883.38, 208,334.88 and 68,743.86

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Solution

The fourth proportional to 138,883.38, 208,334.88 and 68,743.86 is: 103,120.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,883.38 : 208,334.88 = 68,743.86 : x
  2. Step 2: Convert to fraction form
    138,883.38/208,334.88 = 68,743.86/x
  3. Step 3: Cross multiply
    138,883.38x = 208,334.88 × 68,743.86
  4. Step 4: Simplify right side
    138,883.38x = 14,321,743,823.84
  5. Step 5: Solve for x
    x = 14,321,743,823.84/138,883.38
  6. Step 6: Final answer
    x = 103,120.65

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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.