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Finding the Fourth Proportional to 163,313.12, 225,354.66 and 91,701

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Solution

The fourth proportional to 163,313.12, 225,354.66 and 91,701 is: 126,537.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,313.12 : 225,354.66 = 91,701 : x
  2. Step 2: Convert to fraction form
    163,313.12/225,354.66 = 91,701/x
  3. Step 3: Cross multiply
    163,313.12x = 225,354.66 × 91,701
  4. Step 4: Simplify right side
    163,313.12x = 20,665,247,676.66
  5. Step 5: Solve for x
    x = 20,665,247,676.66/163,313.12
  6. Step 6: Final answer
    x = 126,537.58

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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.