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Finding the Fourth Proportional to 251,405.01, 346,945.75 and 136,691.39

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Solution

The fourth proportional to 251,405.01, 346,945.75 and 136,691.39 is: 188,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,405.01 : 346,945.75 = 136,691.39 : x
  2. Step 2: Convert to fraction form
    251,405.01/346,945.75 = 136,691.39/x
  3. Step 3: Cross multiply
    251,405.01x = 346,945.75 × 136,691.39
  4. Step 4: Simplify right side
    251,405.01x = 47,424,496,138.64
  5. Step 5: Solve for x
    x = 47,424,496,138.64/251,405.01
  6. Step 6: Final answer
    x = 188,637.83

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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.