Home / 272,081.02-408,163.78-138,889.20

Finding the Fourth Proportional to 272,081.02, 408,163.78 and 138,889.20

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Solution

The fourth proportional to 272,081.02, 408,163.78 and 138,889.20 is: 208,355.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,081.02 : 408,163.78 = 138,889.20 : x
  2. Step 2: Convert to fraction form
    272,081.02/408,163.78 = 138,889.20/x
  3. Step 3: Cross multiply
    272,081.02x = 408,163.78 × 138,889.20
  4. Step 4: Simplify right side
    272,081.02x = 56,689,540,873.18
  5. Step 5: Solve for x
    x = 56,689,540,873.18/272,081.02
  6. Step 6: Final answer
    x = 208,355.37

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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.