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Finding the Fourth Proportional to 125,563.10, 188,344.65 and 115,940.30

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Solution

The fourth proportional to 125,563.10, 188,344.65 and 115,940.30 is: 173,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,563.10 : 188,344.65 = 115,940.30 : x
  2. Step 2: Convert to fraction form
    125,563.10/188,344.65 = 115,940.30/x
  3. Step 3: Cross multiply
    125,563.10x = 188,344.65 × 115,940.30
  4. Step 4: Simplify right side
    125,563.10x = 21,836,735,224.40
  5. Step 5: Solve for x
    x = 21,836,735,224.40/125,563.10
  6. Step 6: Final answer
    x = 173,910.45

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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.