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Finding the Fourth Proportional to 119,326.76, 178,980.77 and 69,375

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Solution

The fourth proportional to 119,326.76, 178,980.77 and 69,375 is: 104,057.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,326.76 : 178,980.77 = 69,375 : x
  2. Step 2: Convert to fraction form
    119,326.76/178,980.77 = 69,375/x
  3. Step 3: Cross multiply
    119,326.76x = 178,980.77 × 69,375
  4. Step 4: Simplify right side
    119,326.76x = 12,416,790,571.88
  5. Step 5: Solve for x
    x = 12,416,790,571.88/119,326.76
  6. Step 6: Final answer
    x = 104,057.05

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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.