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Finding the Fourth Proportional to 115,749.60, 173,624.40 and 80,728.80

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Solution

The fourth proportional to 115,749.60, 173,624.40 and 80,728.80 is: 121,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,749.60 : 173,624.40 = 80,728.80 : x
  2. Step 2: Convert to fraction form
    115,749.60/173,624.40 = 80,728.80/x
  3. Step 3: Cross multiply
    115,749.60x = 173,624.40 × 80,728.80
  4. Step 4: Simplify right side
    115,749.60x = 14,016,489,462.72
  5. Step 5: Solve for x
    x = 14,016,489,462.72/115,749.60
  6. Step 6: Final answer
    x = 121,093.20

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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.