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Finding the Fourth Proportional to 168,849.21, 253,274.28 and 69,009.42

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Solution

The fourth proportional to 168,849.21, 253,274.28 and 69,009.42 is: 103,514.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,849.21 : 253,274.28 = 69,009.42 : x
  2. Step 2: Convert to fraction form
    168,849.21/253,274.28 = 69,009.42/x
  3. Step 3: Cross multiply
    168,849.21x = 253,274.28 × 69,009.42
  4. Step 4: Simplify right side
    168,849.21x = 17,478,309,897.35
  5. Step 5: Solve for x
    x = 17,478,309,897.35/168,849.21
  6. Step 6: Final answer
    x = 103,514.32

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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.