Home / 81,234.37-121,873.29-25,072.21

Finding the Fourth Proportional to 81,234.37, 121,873.29 and 25,072.21

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Solution

The fourth proportional to 81,234.37, 121,873.29 and 25,072.21 is: 37,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,234.37 : 121,873.29 = 25,072.21 : x
  2. Step 2: Convert to fraction form
    81,234.37/121,873.29 = 25,072.21/x
  3. Step 3: Cross multiply
    81,234.37x = 121,873.29 × 25,072.21
  4. Step 4: Simplify right side
    81,234.37x = 3,055,632,415.59
  5. Step 5: Solve for x
    x = 3,055,632,415.59/81,234.37
  6. Step 6: Final answer
    x = 37,615.02

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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.