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Finding the Fourth Proportional to 139,456.29, 192,448.53 and 75,794.49

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Solution

The fourth proportional to 139,456.29, 192,448.53 and 75,794.49 is: 104,595.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,456.29 : 192,448.53 = 75,794.49 : x
  2. Step 2: Convert to fraction form
    139,456.29/192,448.53 = 75,794.49/x
  3. Step 3: Cross multiply
    139,456.29x = 192,448.53 × 75,794.49
  4. Step 4: Simplify right side
    139,456.29x = 14,586,538,182.60
  5. Step 5: Solve for x
    x = 14,586,538,182.60/139,456.29
  6. Step 6: Final answer
    x = 104,595.77

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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.