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Finding the Fourth Proportional to 108,859.82, 150,218.26 and 61,103.94

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Solution

The fourth proportional to 108,859.82, 150,218.26 and 61,103.94 is: 84,318.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,859.82 : 150,218.26 = 61,103.94 : x
  2. Step 2: Convert to fraction form
    108,859.82/150,218.26 = 61,103.94/x
  3. Step 3: Cross multiply
    108,859.82x = 150,218.26 × 61,103.94
  4. Step 4: Simplify right side
    108,859.82x = 9,178,927,545.94
  5. Step 5: Solve for x
    x = 9,178,927,545.94/108,859.82
  6. Step 6: Final answer
    x = 84,318.78

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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.