Home / 207,905.65-311,892.13-81,477.34

Finding the Fourth Proportional to 207,905.65, 311,892.13 and 81,477.34

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Solution

The fourth proportional to 207,905.65, 311,892.13 and 81,477.34 is: 122,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,905.65 : 311,892.13 = 81,477.34 : x
  2. Step 2: Convert to fraction form
    207,905.65/311,892.13 = 81,477.34/x
  3. Step 3: Cross multiply
    207,905.65x = 311,892.13 × 81,477.34
  4. Step 4: Simplify right side
    207,905.65x = 25,412,140,441.45
  5. Step 5: Solve for x
    x = 25,412,140,441.45/207,905.65
  6. Step 6: Final answer
    x = 122,229.20

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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.