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Finding the Fourth Proportional to 108,343.92, 149,552.28 and 74,464.80

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Solution

The fourth proportional to 108,343.92, 149,552.28 and 74,464.80 is: 102,787.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,343.92 : 149,552.28 = 74,464.80 : x
  2. Step 2: Convert to fraction form
    108,343.92/149,552.28 = 74,464.80/x
  3. Step 3: Cross multiply
    108,343.92x = 149,552.28 × 74,464.80
  4. Step 4: Simplify right side
    108,343.92x = 11,136,380,619.74
  5. Step 5: Solve for x
    x = 11,136,380,619.74/108,343.92
  6. Step 6: Final answer
    x = 102,787.31

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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.