Home / 168,138.08-252,267.36-72,035

Finding the Fourth Proportional to 168,138.08, 252,267.36 and 72,035

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Solution

The fourth proportional to 168,138.08, 252,267.36 and 72,035 is: 108,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,138.08 : 252,267.36 = 72,035 : x
  2. Step 2: Convert to fraction form
    168,138.08/252,267.36 = 72,035/x
  3. Step 3: Cross multiply
    168,138.08x = 252,267.36 × 72,035
  4. Step 4: Simplify right side
    168,138.08x = 18,172,079,277.60
  5. Step 5: Solve for x
    x = 18,172,079,277.60/168,138.08
  6. Step 6: Final answer
    x = 108,078.31

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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.