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Finding the Fourth Proportional to 121,757.85, 168,077.57 and 74,026.44

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Solution

The fourth proportional to 121,757.85, 168,077.57 and 74,026.44 is: 102,187.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,757.85 : 168,077.57 = 74,026.44 : x
  2. Step 2: Convert to fraction form
    121,757.85/168,077.57 = 74,026.44/x
  3. Step 3: Cross multiply
    121,757.85x = 168,077.57 × 74,026.44
  4. Step 4: Simplify right side
    121,757.85x = 12,442,183,780.82
  5. Step 5: Solve for x
    x = 12,442,183,780.82/121,757.85
  6. Step 6: Final answer
    x = 102,187.94

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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.