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Finding the Fourth Proportional to 108,872.53, 150,240.21 and 61,127.89

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Solution

The fourth proportional to 108,872.53, 150,240.21 and 61,127.89 is: 84,354.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,872.53 : 150,240.21 = 61,127.89 : x
  2. Step 2: Convert to fraction form
    108,872.53/150,240.21 = 61,127.89/x
  3. Step 3: Cross multiply
    108,872.53x = 150,240.21 × 61,127.89
  4. Step 4: Simplify right side
    108,872.53x = 9,183,867,030.46
  5. Step 5: Solve for x
    x = 9,183,867,030.46/108,872.53
  6. Step 6: Final answer
    x = 84,354.31

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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.