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Finding the Fourth Proportional to 125,299.67, 188,109.88 and 107,643.29

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Solution

The fourth proportional to 125,299.67, 188,109.88 and 107,643.29 is: 161,602.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,299.67 : 188,109.88 = 107,643.29 : x
  2. Step 2: Convert to fraction form
    125,299.67/188,109.88 = 107,643.29/x
  3. Step 3: Cross multiply
    125,299.67x = 188,109.88 × 107,643.29
  4. Step 4: Simplify right side
    125,299.67x = 20,248,765,155.05
  5. Step 5: Solve for x
    x = 20,248,765,155.05/125,299.67
  6. Step 6: Final answer
    x = 161,602.71

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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.