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Finding the Fourth Proportional to 119,331.96, 178,608.44 and 87,733.64

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Solution

The fourth proportional to 119,331.96, 178,608.44 and 87,733.64 is: 131,314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,331.96 : 178,608.44 = 87,733.64 : x
  2. Step 2: Convert to fraction form
    119,331.96/178,608.44 = 87,733.64/x
  3. Step 3: Cross multiply
    119,331.96x = 178,608.44 × 87,733.64
  4. Step 4: Simplify right side
    119,331.96x = 15,669,968,575.92
  5. Step 5: Solve for x
    x = 15,669,968,575.92/119,331.96
  6. Step 6: Final answer
    x = 131,314.10

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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.