Home / 115,438.20-172,865.70-92,110.20

Finding the Fourth Proportional to 115,438.20, 172,865.70 and 92,110.20

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Solution

The fourth proportional to 115,438.20, 172,865.70 and 92,110.20 is: 137,932.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,438.20 : 172,865.70 = 92,110.20 : x
  2. Step 2: Convert to fraction form
    115,438.20/172,865.70 = 92,110.20/x
  3. Step 3: Cross multiply
    115,438.20x = 172,865.70 × 92,110.20
  4. Step 4: Simplify right side
    115,438.20x = 15,922,694,200.14
  5. Step 5: Solve for x
    x = 15,922,694,200.14/115,438.20
  6. Step 6: Final answer
    x = 137,932.63

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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.