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Finding the Fourth Proportional to 136,876.70, 204,969.45 and 109,228.70

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Solution

The fourth proportional to 136,876.70, 204,969.45 and 109,228.70 is: 163,567.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,876.70 : 204,969.45 = 109,228.70 : x
  2. Step 2: Convert to fraction form
    136,876.70/204,969.45 = 109,228.70/x
  3. Step 3: Cross multiply
    136,876.70x = 204,969.45 × 109,228.70
  4. Step 4: Simplify right side
    136,876.70x = 22,388,546,563.22
  5. Step 5: Solve for x
    x = 22,388,546,563.22/136,876.70
  6. Step 6: Final answer
    x = 163,567.26

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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.