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Finding the Fourth Proportional to 139,197.67, 192,093.29 and 75,535.45

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Solution

The fourth proportional to 139,197.67, 192,093.29 and 75,535.45 is: 104,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,197.67 : 192,093.29 = 75,535.45 : x
  2. Step 2: Convert to fraction form
    139,197.67/192,093.29 = 75,535.45/x
  3. Step 3: Cross multiply
    139,197.67x = 192,093.29 × 75,535.45
  4. Step 4: Simplify right side
    139,197.67x = 14,509,853,102.13
  5. Step 5: Solve for x
    x = 14,509,853,102.13/139,197.67
  6. Step 6: Final answer
    x = 104,239.20

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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.