Home / 207,667.26-311,526.70-81,291.06

Finding the Fourth Proportional to 207,667.26, 311,526.70 and 81,291.06

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Solution

The fourth proportional to 207,667.26, 311,526.70 and 81,291.06 is: 121,946.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,667.26 : 311,526.70 = 81,291.06 : x
  2. Step 2: Convert to fraction form
    207,667.26/311,526.70 = 81,291.06/x
  3. Step 3: Cross multiply
    207,667.26x = 311,526.70 × 81,291.06
  4. Step 4: Simplify right side
    207,667.26x = 25,324,335,661.30
  5. Step 5: Solve for x
    x = 25,324,335,661.30/207,667.26
  6. Step 6: Final answer
    x = 121,946.69

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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.