Home / 115,933.68-159,983.91-65,632.68

Finding the Fourth Proportional to 115,933.68, 159,983.91 and 65,632.68

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Solution

The fourth proportional to 115,933.68, 159,983.91 and 65,632.68 is: 90,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,933.68 : 159,983.91 = 65,632.68 : x
  2. Step 2: Convert to fraction form
    115,933.68/159,983.91 = 65,632.68/x
  3. Step 3: Cross multiply
    115,933.68x = 159,983.91 × 65,632.68
  4. Step 4: Simplify right side
    115,933.68x = 10,500,172,770.18
  5. Step 5: Solve for x
    x = 10,500,172,770.18/115,933.68
  6. Step 6: Final answer
    x = 90,570.51

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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.