Home / 86,181.18-119,020.68-76,788.60

Finding the Fourth Proportional to 86,181.18, 119,020.68 and 76,788.60

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Solution

The fourth proportional to 86,181.18, 119,020.68 and 76,788.60 is: 106,049.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,181.18 : 119,020.68 = 76,788.60 : x
  2. Step 2: Convert to fraction form
    86,181.18/119,020.68 = 76,788.60/x
  3. Step 3: Cross multiply
    86,181.18x = 119,020.68 × 76,788.60
  4. Step 4: Simplify right side
    86,181.18x = 9,139,431,388.25
  5. Step 5: Solve for x
    x = 9,139,431,388.25/86,181.18
  6. Step 6: Final answer
    x = 106,049.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.