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Finding the Fourth Proportional to 121,763.59, 168,033.17 and 68,048.57

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Solution

The fourth proportional to 121,763.59, 168,033.17 and 68,048.57 is: 93,906.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,763.59 : 168,033.17 = 68,048.57 : x
  2. Step 2: Convert to fraction form
    121,763.59/168,033.17 = 68,048.57/x
  3. Step 3: Cross multiply
    121,763.59x = 168,033.17 × 68,048.57
  4. Step 4: Simplify right side
    121,763.59x = 11,434,417,521.27
  5. Step 5: Solve for x
    x = 11,434,417,521.27/121,763.59
  6. Step 6: Final answer
    x = 93,906.71

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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.