Home / 140,081.12-193,311.96-76,419.18

Finding the Fourth Proportional to 140,081.12, 193,311.96 and 76,419.18

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Solution

The fourth proportional to 140,081.12, 193,311.96 and 76,419.18 is: 105,458.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,081.12 : 193,311.96 = 76,419.18 : x
  2. Step 2: Convert to fraction form
    140,081.12/193,311.96 = 76,419.18/x
  3. Step 3: Cross multiply
    140,081.12x = 193,311.96 × 76,419.18
  4. Step 4: Simplify right side
    140,081.12x = 14,772,741,467.39
  5. Step 5: Solve for x
    x = 14,772,741,467.39/140,081.12
  6. Step 6: Final answer
    x = 105,458.48

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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.