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Finding the Fourth Proportional to 121,958.16, 182,937.24 and 80,395.44

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Solution

The fourth proportional to 121,958.16, 182,937.24 and 80,395.44 is: 120,593.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,958.16 : 182,937.24 = 80,395.44 : x
  2. Step 2: Convert to fraction form
    121,958.16/182,937.24 = 80,395.44/x
  3. Step 3: Cross multiply
    121,958.16x = 182,937.24 × 80,395.44
  4. Step 4: Simplify right side
    121,958.16x = 14,707,319,902.19
  5. Step 5: Solve for x
    x = 14,707,319,902.19/121,958.16
  6. Step 6: Final answer
    x = 120,593.16

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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.