Home / 272,760.25-409,154.96-85,786.33

Finding the Fourth Proportional to 272,760.25, 409,154.96 and 85,786.33

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Solution

The fourth proportional to 272,760.25, 409,154.96 and 85,786.33 is: 128,684.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,760.25 : 409,154.96 = 85,786.33 : x
  2. Step 2: Convert to fraction form
    272,760.25/409,154.96 = 85,786.33/x
  3. Step 3: Cross multiply
    272,760.25x = 409,154.96 × 85,786.33
  4. Step 4: Simplify right side
    272,760.25x = 35,099,901,990.77
  5. Step 5: Solve for x
    x = 35,099,901,990.77/272,760.25
  6. Step 6: Final answer
    x = 128,684.08

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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.