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Finding the Fourth Proportional to 108,787.92, 150,129.64 and 61,044.72

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Solution

The fourth proportional to 108,787.92, 150,129.64 and 61,044.72 is: 84,243.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,787.92 : 150,129.64 = 61,044.72 : x
  2. Step 2: Convert to fraction form
    108,787.92/150,129.64 = 61,044.72/x
  3. Step 3: Cross multiply
    108,787.92x = 150,129.64 × 61,044.72
  4. Step 4: Simplify right side
    108,787.92x = 9,164,621,837.50
  5. Step 5: Solve for x
    x = 9,164,621,837.50/108,787.92
  6. Step 6: Final answer
    x = 84,243.01

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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.