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Finding the Fourth Proportional to 139,266.09, 192,184.20 and 75,603.87

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Solution

The fourth proportional to 139,266.09, 192,184.20 and 75,603.87 is: 104,331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,266.09 : 192,184.20 = 75,603.87 : x
  2. Step 2: Convert to fraction form
    139,266.09/192,184.20 = 75,603.87/x
  3. Step 3: Cross multiply
    139,266.09x = 192,184.20 × 75,603.87
  4. Step 4: Simplify right side
    139,266.09x = 14,529,869,272.85
  5. Step 5: Solve for x
    x = 14,529,869,272.85/139,266.09
  6. Step 6: Final answer
    x = 104,331.71

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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.