Home / 207,439.83-311,090.42-81,047.30

Finding the Fourth Proportional to 207,439.83, 311,090.42 and 81,047.30

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Solution

The fourth proportional to 207,439.83, 311,090.42 and 81,047.30 is: 121,543.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,439.83 : 311,090.42 = 81,047.30 : x
  2. Step 2: Convert to fraction form
    207,439.83/311,090.42 = 81,047.30/x
  3. Step 3: Cross multiply
    207,439.83x = 311,090.42 × 81,047.30
  4. Step 4: Simplify right side
    207,439.83x = 25,213,037,244.03
  5. Step 5: Solve for x
    x = 25,213,037,244.03/207,439.83
  6. Step 6: Final answer
    x = 121,543.86

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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.