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Finding the Fourth Proportional to 169,644.17, 254,391.51 and 79,712.47

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Solution

The fourth proportional to 169,644.17, 254,391.51 and 79,712.47 is: 119,533.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,644.17 : 254,391.51 = 79,712.47 : x
  2. Step 2: Convert to fraction form
    169,644.17/254,391.51 = 79,712.47/x
  3. Step 3: Cross multiply
    169,644.17x = 254,391.51 × 79,712.47
  4. Step 4: Simplify right side
    169,644.17x = 20,278,175,609.13
  5. Step 5: Solve for x
    x = 20,278,175,609.13/169,644.17
  6. Step 6: Final answer
    x = 119,533.58

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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.