Home / 148,942.88-205,543.24-80,961.20

Finding the Fourth Proportional to 148,942.88, 205,543.24 and 80,961.20

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Solution

The fourth proportional to 148,942.88, 205,543.24 and 80,961.20 is: 111,727.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,942.88 : 205,543.24 = 80,961.20 : x
  2. Step 2: Convert to fraction form
    148,942.88/205,543.24 = 80,961.20/x
  3. Step 3: Cross multiply
    148,942.88x = 205,543.24 × 80,961.20
  4. Step 4: Simplify right side
    148,942.88x = 16,641,027,362.29
  5. Step 5: Solve for x
    x = 16,641,027,362.29/148,942.88
  6. Step 6: Final answer
    x = 111,727.58

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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.