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Finding the Fourth Proportional to 139,245.80, 192,159.43 and 75,583.58

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Solution

The fourth proportional to 139,245.80, 192,159.43 and 75,583.58 is: 104,305.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,245.80 : 192,159.43 = 75,583.58 : x
  2. Step 2: Convert to fraction form
    139,245.80/192,159.43 = 75,583.58/x
  3. Step 3: Cross multiply
    139,245.80x = 192,159.43 × 75,583.58
  4. Step 4: Simplify right side
    139,245.80x = 14,524,096,500.40
  5. Step 5: Solve for x
    x = 14,524,096,500.40/139,245.80
  6. Step 6: Final answer
    x = 104,305.46

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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.