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Finding the Fourth Proportional to 108,327.79, 149,529.94 and 74,448.43

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Solution

The fourth proportional to 108,327.79, 149,529.94 and 74,448.43 is: 102,764.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,327.79 : 149,529.94 = 74,448.43 : x
  2. Step 2: Convert to fraction form
    108,327.79/149,529.94 = 74,448.43/x
  3. Step 3: Cross multiply
    108,327.79x = 149,529.94 × 74,448.43
  4. Step 4: Simplify right side
    108,327.79x = 11,132,268,711.05
  5. Step 5: Solve for x
    x = 11,132,268,711.05/108,327.79
  6. Step 6: Final answer
    x = 102,764.66

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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.