Home / 207,841.10-311,636.70-81,330.44

Finding the Fourth Proportional to 207,841.10, 311,636.70 and 81,330.44

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Solution

The fourth proportional to 207,841.10, 311,636.70 and 81,330.44 is: 121,946.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,841.10 : 311,636.70 = 81,330.44 : x
  2. Step 2: Convert to fraction form
    207,841.10/311,636.70 = 81,330.44/x
  3. Step 3: Cross multiply
    207,841.10x = 311,636.70 × 81,330.44
  4. Step 4: Simplify right side
    207,841.10x = 25,345,548,372.96
  5. Step 5: Solve for x
    x = 25,345,548,372.96/207,841.10
  6. Step 6: Final answer
    x = 121,946.76

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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.