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Finding the Fourth Proportional to 192,495.89, 288,028.68 and 121,085.07

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Solution

The fourth proportional to 192,495.89, 288,028.68 and 121,085.07 is: 181,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,495.89 : 288,028.68 = 121,085.07 : x
  2. Step 2: Convert to fraction form
    192,495.89/288,028.68 = 121,085.07/x
  3. Step 3: Cross multiply
    192,495.89x = 288,028.68 × 121,085.07
  4. Step 4: Simplify right side
    192,495.89x = 34,875,972,879.81
  5. Step 5: Solve for x
    x = 34,875,972,879.81/192,495.89
  6. Step 6: Final answer
    x = 181,177.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.