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Finding the Fourth Proportional to 169,721.68, 254,461.32 and 79,714.12

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Solution

The fourth proportional to 169,721.68, 254,461.32 and 79,714.12 is: 119,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,721.68 : 254,461.32 = 79,714.12 : x
  2. Step 2: Convert to fraction form
    169,721.68/254,461.32 = 79,714.12/x
  3. Step 3: Cross multiply
    169,721.68x = 254,461.32 × 79,714.12
  4. Step 4: Simplify right side
    169,721.68x = 20,284,160,197.84
  5. Step 5: Solve for x
    x = 20,284,160,197.84/169,721.68
  6. Step 6: Final answer
    x = 119,514.26

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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.