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Finding the Fourth Proportional to 110,626.20, 165,939.30 and 90,943.20

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Solution

The fourth proportional to 110,626.20, 165,939.30 and 90,943.20 is: 136,414.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,626.20 : 165,939.30 = 90,943.20 : x
  2. Step 2: Convert to fraction form
    110,626.20/165,939.30 = 90,943.20/x
  3. Step 3: Cross multiply
    110,626.20x = 165,939.30 × 90,943.20
  4. Step 4: Simplify right side
    110,626.20x = 15,091,050,947.76
  5. Step 5: Solve for x
    x = 15,091,050,947.76/110,626.20
  6. Step 6: Final answer
    x = 136,414.80

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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.