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Finding the Fourth Proportional to 119,315.44, 178,583.72 and 87,717.14

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Solution

The fourth proportional to 119,315.44, 178,583.72 and 87,717.14 is: 131,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,315.44 : 178,583.72 = 87,717.14 : x
  2. Step 2: Convert to fraction form
    119,315.44/178,583.72 = 87,717.14/x
  3. Step 3: Cross multiply
    119,315.44x = 178,583.72 × 87,717.14
  4. Step 4: Simplify right side
    119,315.44x = 15,664,853,168.96
  5. Step 5: Solve for x
    x = 15,664,853,168.96/119,315.44
  6. Step 6: Final answer
    x = 131,289.41

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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.