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Finding the Fourth Proportional to 188,031.17, 259,486.52 and 115,397.64

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Solution

The fourth proportional to 188,031.17, 259,486.52 and 115,397.64 is: 159,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,031.17 : 259,486.52 = 115,397.64 : x
  2. Step 2: Convert to fraction form
    188,031.17/259,486.52 = 115,397.64/x
  3. Step 3: Cross multiply
    188,031.17x = 259,486.52 × 115,397.64
  4. Step 4: Simplify right side
    188,031.17x = 29,944,131,442.82
  5. Step 5: Solve for x
    x = 29,944,131,442.82/188,031.17
  6. Step 6: Final answer
    x = 159,250.90

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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.