Home / 148,644.30-205,128.09-80,659.54

Finding the Fourth Proportional to 148,644.30, 205,128.09 and 80,659.54

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Solution

The fourth proportional to 148,644.30, 205,128.09 and 80,659.54 is: 111,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,644.30 : 205,128.09 = 80,659.54 : x
  2. Step 2: Convert to fraction form
    148,644.30/205,128.09 = 80,659.54/x
  3. Step 3: Cross multiply
    148,644.30x = 205,128.09 × 80,659.54
  4. Step 4: Simplify right side
    148,644.30x = 16,545,537,380.48
  5. Step 5: Solve for x
    x = 16,545,537,380.48/148,644.30
  6. Step 6: Final answer
    x = 111,309.60

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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.