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Finding the Fourth Proportional to 121,958.55, 182,937.83 and 80,395.83

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Solution

The fourth proportional to 121,958.55, 182,937.83 and 80,395.83 is: 120,593.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,958.55 : 182,937.83 = 80,395.83 : x
  2. Step 2: Convert to fraction form
    121,958.55/182,937.83 = 80,395.83/x
  3. Step 3: Cross multiply
    121,958.55x = 182,937.83 × 80,395.83
  4. Step 4: Simplify right side
    121,958.55x = 14,707,438,681.25
  5. Step 5: Solve for x
    x = 14,707,438,681.25/121,958.55
  6. Step 6: Final answer
    x = 120,593.75

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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.