Home / 115,313.72-159,132.67-65,012.36

Finding the Fourth Proportional to 115,313.72, 159,132.67 and 65,012.36

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Solution

The fourth proportional to 115,313.72, 159,132.67 and 65,012.36 is: 89,716.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,313.72 : 159,132.67 = 65,012.36 : x
  2. Step 2: Convert to fraction form
    115,313.72/159,132.67 = 65,012.36/x
  3. Step 3: Cross multiply
    115,313.72x = 159,132.67 × 65,012.36
  4. Step 4: Simplify right side
    115,313.72x = 10,345,589,471.61
  5. Step 5: Solve for x
    x = 10,345,589,471.61/115,313.72
  6. Step 6: Final answer
    x = 89,716.90

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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.