Home / 72,115.20-108,179.52-19,525.12

Finding the Fourth Proportional to 72,115.20, 108,179.52 and 19,525.12

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Solution

The fourth proportional to 72,115.20, 108,179.52 and 19,525.12 is: 29,289.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.20 : 108,179.52 = 19,525.12 : x
  2. Step 2: Convert to fraction form
    72,115.20/108,179.52 = 19,525.12/x
  3. Step 3: Cross multiply
    72,115.20x = 108,179.52 × 19,525.12
  4. Step 4: Simplify right side
    72,115.20x = 2,112,218,109.54
  5. Step 5: Solve for x
    x = 2,112,218,109.54/72,115.20
  6. Step 6: Final answer
    x = 29,289.50

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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.