Home / 207,789.40-311,568.90-89,440.60

Finding the Fourth Proportional to 207,789.40, 311,568.90 and 89,440.60

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Solution

The fourth proportional to 207,789.40, 311,568.90 and 89,440.60 is: 134,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,789.40 : 311,568.90 = 89,440.60 : x
  2. Step 2: Convert to fraction form
    207,789.40/311,568.90 = 89,440.60/x
  3. Step 3: Cross multiply
    207,789.40x = 311,568.90 × 89,440.60
  4. Step 4: Simplify right side
    207,789.40x = 27,866,909,357.34
  5. Step 5: Solve for x
    x = 27,866,909,357.34/207,789.40
  6. Step 6: Final answer
    x = 134,111.31

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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.