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Finding the Fourth Proportional to 188,808.78, 283,213.90 and 76,491.12

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Solution

The fourth proportional to 188,808.78, 283,213.90 and 76,491.12 is: 114,736.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,808.78 : 283,213.90 = 76,491.12 : x
  2. Step 2: Convert to fraction form
    188,808.78/283,213.90 = 76,491.12/x
  3. Step 3: Cross multiply
    188,808.78x = 283,213.90 × 76,491.12
  4. Step 4: Simplify right side
    188,808.78x = 21,663,348,410.57
  5. Step 5: Solve for x
    x = 21,663,348,410.57/188,808.78
  6. Step 6: Final answer
    x = 114,736.98

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1.5x scale

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.