Home / 207,913.13-311,903.33-81,484.79

Finding the Fourth Proportional to 207,913.13, 311,903.33 and 81,484.79

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Solution

The fourth proportional to 207,913.13, 311,903.33 and 81,484.79 is: 122,240.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,913.13 : 311,903.33 = 81,484.79 : x
  2. Step 2: Convert to fraction form
    207,913.13/311,903.33 = 81,484.79/x
  3. Step 3: Cross multiply
    207,913.13x = 311,903.33 × 81,484.79
  4. Step 4: Simplify right side
    207,913.13x = 25,415,375,378.41
  5. Step 5: Solve for x
    x = 25,415,375,378.41/207,913.13
  6. Step 6: Final answer
    x = 122,240.36

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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.