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Finding the Fourth Proportional to 139,619.60, 192,675.88 and 75,957.85

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Solution

The fourth proportional to 139,619.60, 192,675.88 and 75,957.85 is: 104,822.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,619.60 : 192,675.88 = 75,957.85 : x
  2. Step 2: Convert to fraction form
    139,619.60/192,675.88 = 75,957.85/x
  3. Step 3: Cross multiply
    139,619.60x = 192,675.88 × 75,957.85
  4. Step 4: Simplify right side
    139,619.60x = 14,635,245,889.24
  5. Step 5: Solve for x
    x = 14,635,245,889.24/139,619.60
  6. Step 6: Final answer
    x = 104,822.29

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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.