Home / 268,758.75-403,196.43-81,765.39

Finding the Fourth Proportional to 268,758.75, 403,196.43 and 81,765.39

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Solution

The fourth proportional to 268,758.75, 403,196.43 and 81,765.39 is: 122,665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,758.75 : 403,196.43 = 81,765.39 : x
  2. Step 2: Convert to fraction form
    268,758.75/403,196.43 = 81,765.39/x
  3. Step 3: Cross multiply
    268,758.75x = 403,196.43 × 81,765.39
  4. Step 4: Simplify right side
    268,758.75x = 32,967,513,345.56
  5. Step 5: Solve for x
    x = 32,967,513,345.56/268,758.75
  6. Step 6: Final answer
    x = 122,665.82

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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.