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Finding the Fourth Proportional to 121,953.60, 182,930.40 and 80,098.20

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Solution

The fourth proportional to 121,953.60, 182,930.40 and 80,098.20 is: 120,147.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,953.60 : 182,930.40 = 80,098.20 : x
  2. Step 2: Convert to fraction form
    121,953.60/182,930.40 = 80,098.20/x
  3. Step 3: Cross multiply
    121,953.60x = 182,930.40 × 80,098.20
  4. Step 4: Simplify right side
    121,953.60x = 14,652,395,765.28
  5. Step 5: Solve for x
    x = 14,652,395,765.28/121,953.60
  6. Step 6: Final answer
    x = 120,147.30

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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.