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Finding the Fourth Proportional to 179,638.60, 269,555.10 and 74,468.20

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Solution

The fourth proportional to 179,638.60, 269,555.10 and 74,468.20 is: 111,742.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,638.60 : 269,555.10 = 74,468.20 : x
  2. Step 2: Convert to fraction form
    179,638.60/269,555.10 = 74,468.20/x
  3. Step 3: Cross multiply
    179,638.60x = 269,555.10 × 74,468.20
  4. Step 4: Simplify right side
    179,638.60x = 20,073,283,097.82
  5. Step 5: Solve for x
    x = 20,073,283,097.82/179,638.60
  6. Step 6: Final answer
    x = 111,742.59

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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.