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Finding the Fourth Proportional to 168,378.71, 232,355.34 and 91,895.87

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Solution

The fourth proportional to 168,378.71, 232,355.34 and 91,895.87 is: 126,812.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,378.71 : 232,355.34 = 91,895.87 : x
  2. Step 2: Convert to fraction form
    168,378.71/232,355.34 = 91,895.87/x
  3. Step 3: Cross multiply
    168,378.71x = 232,355.34 × 91,895.87
  4. Step 4: Simplify right side
    168,378.71x = 21,352,496,699.33
  5. Step 5: Solve for x
    x = 21,352,496,699.33/168,378.71
  6. Step 6: Final answer
    x = 126,812.33

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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.