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Finding the Fourth Proportional to 115,750.60, 173,625.90 and 80,729.80

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Solution

The fourth proportional to 115,750.60, 173,625.90 and 80,729.80 is: 121,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,750.60 : 173,625.90 = 80,729.80 : x
  2. Step 2: Convert to fraction form
    115,750.60/173,625.90 = 80,729.80/x
  3. Step 3: Cross multiply
    115,750.60x = 173,625.90 × 80,729.80
  4. Step 4: Simplify right side
    115,750.60x = 14,016,784,181.82
  5. Step 5: Solve for x
    x = 14,016,784,181.82/115,750.60
  6. Step 6: Final answer
    x = 121,094.70

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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.