Home / 139,631.20-192,691.90-75,969.46

Finding the Fourth Proportional to 139,631.20, 192,691.90 and 75,969.46

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Solution

The fourth proportional to 139,631.20, 192,691.90 and 75,969.46 is: 104,838.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,631.20 : 192,691.90 = 75,969.46 : x
  2. Step 2: Convert to fraction form
    139,631.20/192,691.90 = 75,969.46/x
  3. Step 3: Cross multiply
    139,631.20x = 192,691.90 × 75,969.46
  4. Step 4: Simplify right side
    139,631.20x = 14,638,699,589.37
  5. Step 5: Solve for x
    x = 14,638,699,589.37/139,631.20
  6. Step 6: Final answer
    x = 104,838.31

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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.