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Finding the Fourth Proportional to 168,642.97, 252,511.13 and 128,470.57

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Solution

The fourth proportional to 168,642.97, 252,511.13 and 128,470.57 is: 192,360.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,642.97 : 252,511.13 = 128,470.57 : x
  2. Step 2: Convert to fraction form
    168,642.97/252,511.13 = 128,470.57/x
  3. Step 3: Cross multiply
    168,642.97x = 252,511.13 × 128,470.57
  4. Step 4: Simplify right side
    168,642.97x = 32,440,246,897.54
  5. Step 5: Solve for x
    x = 32,440,246,897.54/168,642.97
  6. Step 6: Final answer
    x = 192,360.51

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1.5x scale

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.