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Finding the Fourth Proportional to 236,159.62, 325,893.78 and 128,731.75

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Solution

The fourth proportional to 236,159.62, 325,893.78 and 128,731.75 is: 177,646.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,159.62 : 325,893.78 = 128,731.75 : x
  2. Step 2: Convert to fraction form
    236,159.62/325,893.78 = 128,731.75/x
  3. Step 3: Cross multiply
    236,159.62x = 325,893.78 × 128,731.75
  4. Step 4: Simplify right side
    236,159.62x = 41,952,876,613.52
  5. Step 5: Solve for x
    x = 41,952,876,613.52/236,159.62
  6. Step 6: Final answer
    x = 177,646.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.