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Finding the Fourth Proportional to 125,591.54, 188,054.09 and 75,603

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Solution

The fourth proportional to 125,591.54, 188,054.09 and 75,603 is: 113,203.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,591.54 : 188,054.09 = 75,603 : x
  2. Step 2: Convert to fraction form
    125,591.54/188,054.09 = 75,603/x
  3. Step 3: Cross multiply
    125,591.54x = 188,054.09 × 75,603
  4. Step 4: Simplify right side
    125,591.54x = 14,217,453,366.27
  5. Step 5: Solve for x
    x = 14,217,453,366.27/125,591.54
  6. Step 6: Final answer
    x = 113,203.91

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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.