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Finding the Fourth Proportional to 121,758.52, 168,026.26 and 68,043.52

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Solution

The fourth proportional to 121,758.52, 168,026.26 and 68,043.52 is: 93,899.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,758.52 : 168,026.26 = 68,043.52 : x
  2. Step 2: Convert to fraction form
    121,758.52/168,026.26 = 68,043.52/x
  3. Step 3: Cross multiply
    121,758.52x = 168,026.26 × 68,043.52
  4. Step 4: Simplify right side
    121,758.52x = 11,433,098,182.84
  5. Step 5: Solve for x
    x = 11,433,098,182.84/121,758.52
  6. Step 6: Final answer
    x = 93,899.78

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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.