Home / 115,434.80-173,152.20-100,672.55

Finding the Fourth Proportional to 115,434.80, 173,152.20 and 100,672.55

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Solution

The fourth proportional to 115,434.80, 173,152.20 and 100,672.55 is: 151,008.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,434.80 : 173,152.20 = 100,672.55 : x
  2. Step 2: Convert to fraction form
    115,434.80/173,152.20 = 100,672.55/x
  3. Step 3: Cross multiply
    115,434.80x = 173,152.20 × 100,672.55
  4. Step 4: Simplify right side
    115,434.80x = 17,431,673,512.11
  5. Step 5: Solve for x
    x = 17,431,673,512.11/115,434.80
  6. Step 6: Final answer
    x = 151,008.83

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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.