Home / 207,948.83-311,977.91-81,596.72

Finding the Fourth Proportional to 207,948.83, 311,977.91 and 81,596.72

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Solution

The fourth proportional to 207,948.83, 311,977.91 and 81,596.72 is: 122,416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,948.83 : 311,977.91 = 81,596.72 : x
  2. Step 2: Convert to fraction form
    207,948.83/311,977.91 = 81,596.72/x
  3. Step 3: Cross multiply
    207,948.83x = 311,977.91 × 81,596.72
  4. Step 4: Simplify right side
    207,948.83x = 25,456,372,200.58
  5. Step 5: Solve for x
    x = 25,456,372,200.58/207,948.83
  6. Step 6: Final answer
    x = 122,416.52

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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.