Home / 207,785.40-311,562.90-89,436.60

Finding the Fourth Proportional to 207,785.40, 311,562.90 and 89,436.60

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Solution

The fourth proportional to 207,785.40, 311,562.90 and 89,436.60 is: 134,105.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,785.40 : 311,562.90 = 89,436.60 : x
  2. Step 2: Convert to fraction form
    207,785.40/311,562.90 = 89,436.60/x
  3. Step 3: Cross multiply
    207,785.40x = 311,562.90 × 89,436.60
  4. Step 4: Simplify right side
    207,785.40x = 27,865,126,462.14
  5. Step 5: Solve for x
    x = 27,865,126,462.14/207,785.40
  6. Step 6: Final answer
    x = 134,105.31

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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.