Home / 115,534.20-159,431.49-64,536.81

Finding the Fourth Proportional to 115,534.20, 159,431.49 and 64,536.81

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Solution

The fourth proportional to 115,534.20, 159,431.49 and 64,536.81 is: 89,057.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,534.20 : 159,431.49 = 64,536.81 : x
  2. Step 2: Convert to fraction form
    115,534.20/159,431.49 = 64,536.81/x
  3. Step 3: Cross multiply
    115,534.20x = 159,431.49 × 64,536.81
  4. Step 4: Simplify right side
    115,534.20x = 10,289,199,778.15
  5. Step 5: Solve for x
    x = 10,289,199,778.15/115,534.20
  6. Step 6: Final answer
    x = 89,057.61

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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.