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Finding the Fourth Proportional to 139,594.59, 192,639.67 and 75,932.64

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Solution

The fourth proportional to 139,594.59, 192,639.67 and 75,932.64 is: 104,786.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,594.59 : 192,639.67 = 75,932.64 : x
  2. Step 2: Convert to fraction form
    139,594.59/192,639.67 = 75,932.64/x
  3. Step 3: Cross multiply
    139,594.59x = 192,639.67 × 75,932.64
  4. Step 4: Simplify right side
    139,594.59x = 14,627,638,522.00
  5. Step 5: Solve for x
    x = 14,627,638,522.00/139,594.59
  6. Step 6: Final answer
    x = 104,786.57

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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.