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Finding the Fourth Proportional to 108,871.75, 150,231.49 and 61,130.47

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Solution

The fourth proportional to 108,871.75, 150,231.49 and 61,130.47 is: 84,353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,871.75 : 150,231.49 = 61,130.47 : x
  2. Step 2: Convert to fraction form
    108,871.75/150,231.49 = 61,130.47/x
  3. Step 3: Cross multiply
    108,871.75x = 150,231.49 × 61,130.47
  4. Step 4: Simplify right side
    108,871.75x = 9,183,721,592.50
  5. Step 5: Solve for x
    x = 9,183,721,592.50/108,871.75
  6. Step 6: Final answer
    x = 84,353.58

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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.