Home / 115,234.20-172,851.30-91,906.20

Finding the Fourth Proportional to 115,234.20, 172,851.30 and 91,906.20

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Solution

The fourth proportional to 115,234.20, 172,851.30 and 91,906.20 is: 137,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,234.20 : 172,851.30 = 91,906.20 : x
  2. Step 2: Convert to fraction form
    115,234.20/172,851.30 = 91,906.20/x
  3. Step 3: Cross multiply
    115,234.20x = 172,851.30 × 91,906.20
  4. Step 4: Simplify right side
    115,234.20x = 15,886,106,148.06
  5. Step 5: Solve for x
    x = 15,886,106,148.06/115,234.20
  6. Step 6: Final answer
    x = 137,859.30

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1.5x scale

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.