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Finding the Fourth Proportional to 120,162.48, 165,823.32 and 67,170.48

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Solution

The fourth proportional to 120,162.48, 165,823.32 and 67,170.48 is: 92,694.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,162.48 : 165,823.32 = 67,170.48 : x
  2. Step 2: Convert to fraction form
    120,162.48/165,823.32 = 67,170.48/x
  3. Step 3: Cross multiply
    120,162.48x = 165,823.32 × 67,170.48
  4. Step 4: Simplify right side
    120,162.48x = 11,138,431,999.59
  5. Step 5: Solve for x
    x = 11,138,431,999.59/120,162.48
  6. Step 6: Final answer
    x = 92,694.76

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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.