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Finding the Fourth Proportional to 139,151.67, 192,029.38 and 75,489.47

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Solution

The fourth proportional to 139,151.67, 192,029.38 and 75,489.47 is: 104,175.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,151.67 : 192,029.38 = 75,489.47 : x
  2. Step 2: Convert to fraction form
    139,151.67/192,029.38 = 75,489.47/x
  3. Step 3: Cross multiply
    139,151.67x = 192,029.38 × 75,489.47
  4. Step 4: Simplify right side
    139,151.67x = 14,496,196,116.50
  5. Step 5: Solve for x
    x = 14,496,196,116.50/139,151.67
  6. Step 6: Final answer
    x = 104,175.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.