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Finding the Fourth Proportional to 125,388.63, 188,130.96 and 75,504.38

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Solution

The fourth proportional to 125,388.63, 188,130.96 and 75,504.38 is: 113,285.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,388.63 : 188,130.96 = 75,504.38 : x
  2. Step 2: Convert to fraction form
    125,388.63/188,130.96 = 75,504.38/x
  3. Step 3: Cross multiply
    125,388.63x = 188,130.96 × 75,504.38
  4. Step 4: Simplify right side
    125,388.63x = 14,204,710,552.95
  5. Step 5: Solve for x
    x = 14,204,710,552.95/125,388.63
  6. Step 6: Final answer
    x = 113,285.48

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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.