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Finding the Fourth Proportional to 125,335.50, 188,012.97 and 42,229.50

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Solution

The fourth proportional to 125,335.50, 188,012.97 and 42,229.50 is: 63,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,335.50 : 188,012.97 = 42,229.50 : x
  2. Step 2: Convert to fraction form
    125,335.50/188,012.97 = 42,229.50/x
  3. Step 3: Cross multiply
    125,335.50x = 188,012.97 × 42,229.50
  4. Step 4: Simplify right side
    125,335.50x = 7,939,693,716.62
  5. Step 5: Solve for x
    x = 7,939,693,716.62/125,335.50
  6. Step 6: Final answer
    x = 63,347.52

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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.