Home / 186,479.11-279,716.60-111,620.15

Finding the Fourth Proportional to 186,479.11, 279,716.60 and 111,620.15

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Solution

The fourth proportional to 186,479.11, 279,716.60 and 111,620.15 is: 167,428.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,479.11 : 279,716.60 = 111,620.15 : x
  2. Step 2: Convert to fraction form
    186,479.11/279,716.60 = 111,620.15/x
  3. Step 3: Cross multiply
    186,479.11x = 279,716.60 × 111,620.15
  4. Step 4: Simplify right side
    186,479.11x = 31,222,008,778.89
  5. Step 5: Solve for x
    x = 31,222,008,778.89/186,479.11
  6. Step 6: Final answer
    x = 167,428.99

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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.