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Finding the Fourth Proportional to 192,765, 266,179.86 and 121,264.68

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Solution

The fourth proportional to 192,765, 266,179.86 and 121,264.68 is: 167,448.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,765 : 266,179.86 = 121,264.68 : x
  2. Step 2: Convert to fraction form
    192,765/266,179.86 = 121,264.68/x
  3. Step 3: Cross multiply
    192,765x = 266,179.86 × 121,264.68
  4. Step 4: Simplify right side
    192,765x = 32,278,215,545.34
  5. Step 5: Solve for x
    x = 32,278,215,545.34/192,765
  6. Step 6: Final answer
    x = 167,448.53

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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.