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Finding the Fourth Proportional to 139,295.70, 192,222.68 and 75,632.04

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Solution

The fourth proportional to 139,295.70, 192,222.68 and 75,632.04 is: 104,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,295.70 : 192,222.68 = 75,632.04 : x
  2. Step 2: Convert to fraction form
    139,295.70/192,222.68 = 75,632.04/x
  3. Step 3: Cross multiply
    139,295.70x = 192,222.68 × 75,632.04
  4. Step 4: Simplify right side
    139,295.70x = 14,538,193,044.51
  5. Step 5: Solve for x
    x = 14,538,193,044.51/139,295.70
  6. Step 6: Final answer
    x = 104,369.29

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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.