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Finding the Fourth Proportional to 168,954.40, 253,316.40 and 80,250.40

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Solution

The fourth proportional to 168,954.40, 253,316.40 and 80,250.40 is: 120,320.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,954.40 : 253,316.40 = 80,250.40 : x
  2. Step 2: Convert to fraction form
    168,954.40/253,316.40 = 80,250.40/x
  3. Step 3: Cross multiply
    168,954.40x = 253,316.40 × 80,250.40
  4. Step 4: Simplify right side
    168,954.40x = 20,328,742,426.56
  5. Step 5: Solve for x
    x = 20,328,742,426.56/168,954.40
  6. Step 6: Final answer
    x = 120,320.88

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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.