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Finding the Fourth Proportional to 166,803.78, 230,190 and 91,352.28

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Solution

The fourth proportional to 166,803.78, 230,190 and 91,352.28 is: 126,066.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,803.78 : 230,190 = 91,352.28 : x
  2. Step 2: Convert to fraction form
    166,803.78/230,190 = 91,352.28/x
  3. Step 3: Cross multiply
    166,803.78x = 230,190 × 91,352.28
  4. Step 4: Simplify right side
    166,803.78x = 21,028,381,333.20
  5. Step 5: Solve for x
    x = 21,028,381,333.20/166,803.78
  6. Step 6: Final answer
    x = 126,066.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.