Home / 272,731.96-409,163.54-85,743.32

Finding the Fourth Proportional to 272,731.96, 409,163.54 and 85,743.32

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Solution

The fourth proportional to 272,731.96, 409,163.54 and 85,743.32 is: 128,635.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,731.96 : 409,163.54 = 85,743.32 : x
  2. Step 2: Convert to fraction form
    272,731.96/409,163.54 = 85,743.32/x
  3. Step 3: Cross multiply
    272,731.96x = 409,163.54 × 85,743.32
  4. Step 4: Simplify right side
    272,731.96x = 35,083,040,342.55
  5. Step 5: Solve for x
    x = 35,083,040,342.55/272,731.96
  6. Step 6: Final answer
    x = 128,635.60

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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.