Home / 221,016.70-331,337.63-78,819.17

Finding the Fourth Proportional to 221,016.70, 331,337.63 and 78,819.17

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Solution

The fourth proportional to 221,016.70, 331,337.63 and 78,819.17 is: 118,161.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,016.70 : 331,337.63 = 78,819.17 : x
  2. Step 2: Convert to fraction form
    221,016.70/331,337.63 = 78,819.17/x
  3. Step 3: Cross multiply
    221,016.70x = 331,337.63 × 78,819.17
  4. Step 4: Simplify right side
    221,016.70x = 26,115,756,986.37
  5. Step 5: Solve for x
    x = 26,115,756,986.37/221,016.70
  6. Step 6: Final answer
    x = 118,161.92

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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.