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Finding the Fourth Proportional to 168,261.05, 252,500.72 and 100,742.19

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Solution

The fourth proportional to 168,261.05, 252,500.72 and 100,742.19 is: 151,178.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,261.05 : 252,500.72 = 100,742.19 : x
  2. Step 2: Convert to fraction form
    168,261.05/252,500.72 = 100,742.19/x
  3. Step 3: Cross multiply
    168,261.05x = 252,500.72 × 100,742.19
  4. Step 4: Simplify right side
    168,261.05x = 25,437,475,509.38
  5. Step 5: Solve for x
    x = 25,437,475,509.38/168,261.05
  6. Step 6: Final answer
    x = 151,178.63

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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.