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Finding the Fourth Proportional to 139,351.60, 192,307.44 and 75,689.44

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Solution

The fourth proportional to 139,351.60, 192,307.44 and 75,689.44 is: 104,452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,351.60 : 192,307.44 = 75,689.44 : x
  2. Step 2: Convert to fraction form
    139,351.60/192,307.44 = 75,689.44/x
  3. Step 3: Cross multiply
    139,351.60x = 192,307.44 × 75,689.44
  4. Step 4: Simplify right side
    139,351.60x = 14,555,642,441.43
  5. Step 5: Solve for x
    x = 14,555,642,441.43/139,351.60
  6. Step 6: Final answer
    x = 104,452.64

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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.