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Finding the Fourth Proportional to 149,323, 206,062.87 and 81,339.18

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Solution

The fourth proportional to 149,323, 206,062.87 and 81,339.18 is: 112,246.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,323 : 206,062.87 = 81,339.18 : x
  2. Step 2: Convert to fraction form
    149,323/206,062.87 = 81,339.18/x
  3. Step 3: Cross multiply
    149,323x = 206,062.87 × 81,339.18
  4. Step 4: Simplify right side
    149,323x = 16,760,984,874.25
  5. Step 5: Solve for x
    x = 16,760,984,874.25/149,323
  6. Step 6: Final answer
    x = 112,246.51

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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.