Home / 148,642.32-205,125.84-80,659.56

Finding the Fourth Proportional to 148,642.32, 205,125.84 and 80,659.56

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Solution

The fourth proportional to 148,642.32, 205,125.84 and 80,659.56 is: 111,309.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,642.32 : 205,125.84 = 80,659.56 : x
  2. Step 2: Convert to fraction form
    148,642.32/205,125.84 = 80,659.56/x
  3. Step 3: Cross multiply
    148,642.32x = 205,125.84 × 80,659.56
  4. Step 4: Simplify right side
    148,642.32x = 16,545,359,999.03
  5. Step 5: Solve for x
    x = 16,545,359,999.03/148,642.32
  6. Step 6: Final answer
    x = 111,309.89

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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.