Home / 138,377.32-207,644.91-54,144.34

Finding the Fourth Proportional to 138,377.32, 207,644.91 and 54,144.34

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Solution

The fourth proportional to 138,377.32, 207,644.91 and 54,144.34 is: 81,247.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,377.32 : 207,644.91 = 54,144.34 : x
  2. Step 2: Convert to fraction form
    138,377.32/207,644.91 = 54,144.34/x
  3. Step 3: Cross multiply
    138,377.32x = 207,644.91 × 54,144.34
  4. Step 4: Simplify right side
    138,377.32x = 11,242,796,606.31
  5. Step 5: Solve for x
    x = 11,242,796,606.31/138,377.32
  6. Step 6: Final answer
    x = 81,247.39

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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.