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Finding the Fourth Proportional to 139,454.54, 192,447.29 and 75,792.34

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Solution

The fourth proportional to 139,454.54, 192,447.29 and 75,792.34 is: 104,593.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,454.54 : 192,447.29 = 75,792.34 : x
  2. Step 2: Convert to fraction form
    139,454.54/192,447.29 = 75,792.34/x
  3. Step 3: Cross multiply
    139,454.54x = 192,447.29 × 75,792.34
  4. Step 4: Simplify right side
    139,454.54x = 14,586,030,865.80
  5. Step 5: Solve for x
    x = 14,586,030,865.80/139,454.54
  6. Step 6: Final answer
    x = 104,593.44

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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.