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Finding the Fourth Proportional to 121,766.76, 168,038.74 and 68,052.68

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Solution

The fourth proportional to 121,766.76, 168,038.74 and 68,052.68 is: 93,913.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,766.76 : 168,038.74 = 68,052.68 : x
  2. Step 2: Convert to fraction form
    121,766.76/168,038.74 = 68,052.68/x
  3. Step 3: Cross multiply
    121,766.76x = 168,038.74 × 68,052.68
  4. Step 4: Simplify right side
    121,766.76x = 11,435,486,600.82
  5. Step 5: Solve for x
    x = 11,435,486,600.82/121,766.76
  6. Step 6: Final answer
    x = 93,913.04

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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.