Home / 81,546.15-122,319.23-74,657.10

Finding the Fourth Proportional to 81,546.15, 122,319.23 and 74,657.10

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Solution

The fourth proportional to 81,546.15, 122,319.23 and 74,657.10 is: 111,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,546.15 : 122,319.23 = 74,657.10 : x
  2. Step 2: Convert to fraction form
    81,546.15/122,319.23 = 74,657.10/x
  3. Step 3: Cross multiply
    81,546.15x = 122,319.23 × 74,657.10
  4. Step 4: Simplify right side
    81,546.15x = 9,131,998,612.75
  5. Step 5: Solve for x
    x = 9,131,998,612.75/81,546.15
  6. Step 6: Final answer
    x = 111,985.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.