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Finding the Fourth Proportional to 108,870.50, 150,229.77 and 61,129.22

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Solution

The fourth proportional to 108,870.50, 150,229.77 and 61,129.22 is: 84,351.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,870.50 : 150,229.77 = 61,129.22 : x
  2. Step 2: Convert to fraction form
    108,870.50/150,229.77 = 61,129.22/x
  3. Step 3: Cross multiply
    108,870.50x = 150,229.77 × 61,129.22
  4. Step 4: Simplify right side
    108,870.50x = 9,183,428,660.88
  5. Step 5: Solve for x
    x = 9,183,428,660.88/108,870.50
  6. Step 6: Final answer
    x = 84,351.86

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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.