Home / 100,320.54-138,456.44-62,092.34

Finding the Fourth Proportional to 100,320.54, 138,456.44 and 62,092.34

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Solution

The fourth proportional to 100,320.54, 138,456.44 and 62,092.34 is: 85,696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,320.54 : 138,456.44 = 62,092.34 : x
  2. Step 2: Convert to fraction form
    100,320.54/138,456.44 = 62,092.34/x
  3. Step 3: Cross multiply
    100,320.54x = 138,456.44 × 62,092.34
  4. Step 4: Simplify right side
    100,320.54x = 8,597,083,864.14
  5. Step 5: Solve for x
    x = 8,597,083,864.14/100,320.54
  6. Step 6: Final answer
    x = 85,696.15

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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.