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Finding the Fourth Proportional to 108,878.73, 150,248.74 and 61,134.09

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Solution

The fourth proportional to 108,878.73, 150,248.74 and 61,134.09 is: 84,362.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,878.73 : 150,248.74 = 61,134.09 : x
  2. Step 2: Convert to fraction form
    108,878.73/150,248.74 = 61,134.09/x
  3. Step 3: Cross multiply
    108,878.73x = 150,248.74 × 61,134.09
  4. Step 4: Simplify right side
    108,878.73x = 9,185,319,993.55
  5. Step 5: Solve for x
    x = 9,185,319,993.55/108,878.73
  6. Step 6: Final answer
    x = 84,362.85

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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.