Home / 115,956.87-159,949.75-76,665.71

Finding the Fourth Proportional to 115,956.87, 159,949.75 and 76,665.71

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Solution

The fourth proportional to 115,956.87, 159,949.75 and 76,665.71 is: 105,751.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,956.87 : 159,949.75 = 76,665.71 : x
  2. Step 2: Convert to fraction form
    115,956.87/159,949.75 = 76,665.71/x
  3. Step 3: Cross multiply
    115,956.87x = 159,949.75 × 76,665.71
  4. Step 4: Simplify right side
    115,956.87x = 12,262,660,764.74
  5. Step 5: Solve for x
    x = 12,262,660,764.74/115,956.87
  6. Step 6: Final answer
    x = 105,751.92

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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.