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Finding the Fourth Proportional to 108,499.10, 149,628.84 and 74,447.51

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Solution

The fourth proportional to 108,499.10, 149,628.84 and 74,447.51 is: 102,669.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,499.10 : 149,628.84 = 74,447.51 : x
  2. Step 2: Convert to fraction form
    108,499.10/149,628.84 = 74,447.51/x
  3. Step 3: Cross multiply
    108,499.10x = 149,628.84 × 74,447.51
  4. Step 4: Simplify right side
    108,499.10x = 11,139,494,562.19
  5. Step 5: Solve for x
    x = 11,139,494,562.19/108,499.10
  6. Step 6: Final answer
    x = 102,669.00

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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.