Home / 251,936.78-347,656.81-138,759.53

Finding the Fourth Proportional to 251,936.78, 347,656.81 and 138,759.53

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Solution

The fourth proportional to 251,936.78, 347,656.81 and 138,759.53 is: 191,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,936.78 : 347,656.81 = 138,759.53 : x
  2. Step 2: Convert to fraction form
    251,936.78/347,656.81 = 138,759.53/x
  3. Step 3: Cross multiply
    251,936.78x = 347,656.81 × 138,759.53
  4. Step 4: Simplify right side
    251,936.78x = 48,240,695,556.90
  5. Step 5: Solve for x
    x = 48,240,695,556.90/251,936.78
  6. Step 6: Final answer
    x = 191,479.37

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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.