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Finding the Fourth Proportional to 108,873.80, 150,262.26 and 66,456.92

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Solution

The fourth proportional to 108,873.80, 150,262.26 and 66,456.92 is: 91,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,873.80 : 150,262.26 = 66,456.92 : x
  2. Step 2: Convert to fraction form
    108,873.80/150,262.26 = 66,456.92/x
  3. Step 3: Cross multiply
    108,873.80x = 150,262.26 × 66,456.92
  4. Step 4: Simplify right side
    108,873.80x = 9,985,966,991.84
  5. Step 5: Solve for x
    x = 9,985,966,991.84/108,873.80
  6. Step 6: Final answer
    x = 91,720.57

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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.