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Finding the Fourth Proportional to 139,804.48, 192,935.01 and 79,373.12

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Solution

The fourth proportional to 139,804.48, 192,935.01 and 79,373.12 is: 109,537.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,804.48 : 192,935.01 = 79,373.12 : x
  2. Step 2: Convert to fraction form
    139,804.48/192,935.01 = 79,373.12/x
  3. Step 3: Cross multiply
    139,804.48x = 192,935.01 × 79,373.12
  4. Step 4: Simplify right side
    139,804.48x = 15,313,853,033.91
  5. Step 5: Solve for x
    x = 15,313,853,033.91/139,804.48
  6. Step 6: Final answer
    x = 109,537.64

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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.