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Finding the Fourth Proportional to 139,677.54, 192,759.35 and 79,250.73

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Solution

The fourth proportional to 139,677.54, 192,759.35 and 79,250.73 is: 109,368.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,677.54 : 192,759.35 = 79,250.73 : x
  2. Step 2: Convert to fraction form
    139,677.54/192,759.35 = 79,250.73/x
  3. Step 3: Cross multiply
    139,677.54x = 192,759.35 × 79,250.73
  4. Step 4: Simplify right side
    139,677.54x = 15,276,319,201.83
  5. Step 5: Solve for x
    x = 15,276,319,201.83/139,677.54
  6. Step 6: Final answer
    x = 109,368.47

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1.5x scale

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.