Home / 108,853.38-163,105.20-91,357.38

Finding the Fourth Proportional to 108,853.38, 163,105.20 and 91,357.38

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Solution

The fourth proportional to 108,853.38, 163,105.20 and 91,357.38 is: 136,889.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,853.38 : 163,105.20 = 91,357.38 : x
  2. Step 2: Convert to fraction form
    108,853.38/163,105.20 = 91,357.38/x
  3. Step 3: Cross multiply
    108,853.38x = 163,105.20 × 91,357.38
  4. Step 4: Simplify right side
    108,853.38x = 14,900,863,736.38
  5. Step 5: Solve for x
    x = 14,900,863,736.38/108,853.38
  6. Step 6: Final answer
    x = 136,889.31

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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.