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Finding the Fourth Proportional to 139,459.89, 192,453.99 and 75,797.70

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Solution

The fourth proportional to 139,459.89, 192,453.99 and 75,797.70 is: 104,600.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,459.89 : 192,453.99 = 75,797.70 : x
  2. Step 2: Convert to fraction form
    139,459.89/192,453.99 = 75,797.70/x
  3. Step 3: Cross multiply
    139,459.89x = 192,453.99 × 75,797.70
  4. Step 4: Simplify right side
    139,459.89x = 14,587,569,797.82
  5. Step 5: Solve for x
    x = 14,587,569,797.82/139,459.89
  6. Step 6: Final answer
    x = 104,600.47

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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.