Home / 115,720.26-159,763.62-75,503.76

Finding the Fourth Proportional to 115,720.26, 159,763.62 and 75,503.76

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Solution

The fourth proportional to 115,720.26, 159,763.62 and 75,503.76 is: 104,240.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,720.26 : 159,763.62 = 75,503.76 : x
  2. Step 2: Convert to fraction form
    115,720.26/159,763.62 = 75,503.76/x
  3. Step 3: Cross multiply
    115,720.26x = 159,763.62 × 75,503.76
  4. Step 4: Simplify right side
    115,720.26x = 12,062,754,021.21
  5. Step 5: Solve for x
    x = 12,062,754,021.21/115,720.26
  6. Step 6: Final answer
    x = 104,240.64

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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.