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Finding the Fourth Proportional to 105,992.05, 146,232.82 and 65,691.11

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Solution

The fourth proportional to 105,992.05, 146,232.82 and 65,691.11 is: 90,631.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,992.05 : 146,232.82 = 65,691.11 : x
  2. Step 2: Convert to fraction form
    105,992.05/146,232.82 = 65,691.11/x
  3. Step 3: Cross multiply
    105,992.05x = 146,232.82 × 65,691.11
  4. Step 4: Simplify right side
    105,992.05x = 9,606,196,264.23
  5. Step 5: Solve for x
    x = 9,606,196,264.23/105,992.05
  6. Step 6: Final answer
    x = 90,631.29

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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.