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Finding the Fourth Proportional to 108,729.70, 150,054.46 and 60,986.12

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Solution

The fourth proportional to 108,729.70, 150,054.46 and 60,986.12 is: 84,165.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,729.70 : 150,054.46 = 60,986.12 : x
  2. Step 2: Convert to fraction form
    108,729.70/150,054.46 = 60,986.12/x
  3. Step 3: Cross multiply
    108,729.70x = 150,054.46 × 60,986.12
  4. Step 4: Simplify right side
    108,729.70x = 9,151,238,401.36
  5. Step 5: Solve for x
    x = 9,151,238,401.36/108,729.70
  6. Step 6: Final answer
    x = 84,165.03

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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.