Home / 221,091.65-331,707.57-78,933.87

Finding the Fourth Proportional to 221,091.65, 331,707.57 and 78,933.87

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Solution

The fourth proportional to 221,091.65, 331,707.57 and 78,933.87 is: 118,425.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,091.65 : 331,707.57 = 78,933.87 : x
  2. Step 2: Convert to fraction form
    221,091.65/331,707.57 = 78,933.87/x
  3. Step 3: Cross multiply
    221,091.65x = 331,707.57 × 78,933.87
  4. Step 4: Simplify right side
    221,091.65x = 26,182,962,208.40
  5. Step 5: Solve for x
    x = 26,182,962,208.40/221,091.65
  6. Step 6: Final answer
    x = 118,425.83

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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.