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Finding the Fourth Proportional to 121,757.64, 168,026.40 and 68,044.92

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Solution

The fourth proportional to 121,757.64, 168,026.40 and 68,044.92 is: 93,902.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,757.64 : 168,026.40 = 68,044.92 : x
  2. Step 2: Convert to fraction form
    121,757.64/168,026.40 = 68,044.92/x
  3. Step 3: Cross multiply
    121,757.64x = 168,026.40 × 68,044.92
  4. Step 4: Simplify right side
    121,757.64x = 11,433,342,945.89
  5. Step 5: Solve for x
    x = 11,433,342,945.89/121,757.64
  6. Step 6: Final answer
    x = 93,902.47

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1.5x scale

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.