Home / 115,738.75-159,724.01-67,991.68

Finding the Fourth Proportional to 115,738.75, 159,724.01 and 67,991.68

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Solution

The fourth proportional to 115,738.75, 159,724.01 and 67,991.68 is: 93,831.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,738.75 : 159,724.01 = 67,991.68 : x
  2. Step 2: Convert to fraction form
    115,738.75/159,724.01 = 67,991.68/x
  3. Step 3: Cross multiply
    115,738.75x = 159,724.01 × 67,991.68
  4. Step 4: Simplify right side
    115,738.75x = 10,859,903,776.24
  5. Step 5: Solve for x
    x = 10,859,903,776.24/115,738.75
  6. Step 6: Final answer
    x = 93,831.18

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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.