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Finding the Fourth Proportional to 80,158.82, 120,347.57 and 40,743.81

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Solution

The fourth proportional to 80,158.82, 120,347.57 and 40,743.81 is: 61,171.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,158.82 : 120,347.57 = 40,743.81 : x
  2. Step 2: Convert to fraction form
    80,158.82/120,347.57 = 40,743.81/x
  3. Step 3: Cross multiply
    80,158.82x = 120,347.57 × 40,743.81
  4. Step 4: Simplify right side
    80,158.82x = 4,903,418,627.90
  5. Step 5: Solve for x
    x = 4,903,418,627.90/80,158.82
  6. Step 6: Final answer
    x = 61,171.30

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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.