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Finding the Fourth Proportional to 110,499.60, 165,749.40 and 80,432.40

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Solution

The fourth proportional to 110,499.60, 165,749.40 and 80,432.40 is: 120,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,499.60 : 165,749.40 = 80,432.40 : x
  2. Step 2: Convert to fraction form
    110,499.60/165,749.40 = 80,432.40/x
  3. Step 3: Cross multiply
    110,499.60x = 165,749.40 × 80,432.40
  4. Step 4: Simplify right side
    110,499.60x = 13,331,622,040.56
  5. Step 5: Solve for x
    x = 13,331,622,040.56/110,499.60
  6. Step 6: Final answer
    x = 120,648.60

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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.