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Finding the Fourth Proportional to 130,954.68, 180,712.68 and 80,052.66

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Solution

The fourth proportional to 130,954.68, 180,712.68 and 80,052.66 is: 110,469.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,954.68 : 180,712.68 = 80,052.66 : x
  2. Step 2: Convert to fraction form
    130,954.68/180,712.68 = 80,052.66/x
  3. Step 3: Cross multiply
    130,954.68x = 180,712.68 × 80,052.66
  4. Step 4: Simplify right side
    130,954.68x = 14,466,530,729.73
  5. Step 5: Solve for x
    x = 14,466,530,729.73/130,954.68
  6. Step 6: Final answer
    x = 110,469.75

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1.5x scale

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.