Home / 137,338.24-189,444-80,703.04

Finding the Fourth Proportional to 137,338.24, 189,444 and 80,703.04

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Solution

The fourth proportional to 137,338.24, 189,444 and 80,703.04 is: 111,321.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,338.24 : 189,444 = 80,703.04 : x
  2. Step 2: Convert to fraction form
    137,338.24/189,444 = 80,703.04/x
  3. Step 3: Cross multiply
    137,338.24x = 189,444 × 80,703.04
  4. Step 4: Simplify right side
    137,338.24x = 15,288,706,709.76
  5. Step 5: Solve for x
    x = 15,288,706,709.76/137,338.24
  6. Step 6: Final answer
    x = 111,321.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.