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Finding the Fourth Proportional to 100,261, 138,347 and 59,960.04

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Solution

The fourth proportional to 100,261, 138,347 and 59,960.04 is: 82,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,261 : 138,347 = 59,960.04 : x
  2. Step 2: Convert to fraction form
    100,261/138,347 = 59,960.04/x
  3. Step 3: Cross multiply
    100,261x = 138,347 × 59,960.04
  4. Step 4: Simplify right side
    100,261x = 8,295,291,653.88
  5. Step 5: Solve for x
    x = 8,295,291,653.88/100,261
  6. Step 6: Final answer
    x = 82,736.97

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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.