Home / 115,775.68-173,719.38-100,811.20

Finding the Fourth Proportional to 115,775.68, 173,719.38 and 100,811.20

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Solution

The fourth proportional to 115,775.68, 173,719.38 and 100,811.20 is: 151,265.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,775.68 : 173,719.38 = 100,811.20 : x
  2. Step 2: Convert to fraction form
    115,775.68/173,719.38 = 100,811.20/x
  3. Step 3: Cross multiply
    115,775.68x = 173,719.38 × 100,811.20
  4. Step 4: Simplify right side
    115,775.68x = 17,512,859,161.06
  5. Step 5: Solve for x
    x = 17,512,859,161.06/115,775.68
  6. Step 6: Final answer
    x = 151,265.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.