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Finding the Fourth Proportional to 108,935.88, 150,347.88 and 66,518.88

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Solution

The fourth proportional to 108,935.88, 150,347.88 and 66,518.88 is: 91,806.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,935.88 : 150,347.88 = 66,518.88 : x
  2. Step 2: Convert to fraction form
    108,935.88/150,347.88 = 66,518.88/x
  3. Step 3: Cross multiply
    108,935.88x = 150,347.88 × 66,518.88
  4. Step 4: Simplify right side
    108,935.88x = 10,000,972,587.97
  5. Step 5: Solve for x
    x = 10,000,972,587.97/108,935.88
  6. Step 6: Final answer
    x = 91,806.05

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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.