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Finding the Fourth Proportional to 168,938.33, 253,407.49 and 77,744.53

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Solution

The fourth proportional to 168,938.33, 253,407.49 and 77,744.53 is: 116,616.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,938.33 : 253,407.49 = 77,744.53 : x
  2. Step 2: Convert to fraction form
    168,938.33/253,407.49 = 77,744.53/x
  3. Step 3: Cross multiply
    168,938.33x = 253,407.49 × 77,744.53
  4. Step 4: Simplify right side
    168,938.33x = 19,701,046,208.53
  5. Step 5: Solve for x
    x = 19,701,046,208.53/168,938.33
  6. Step 6: Final answer
    x = 116,616.79

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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.