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Finding the Fourth Proportional to 108,498.85, 149,628.49 and 74,447.26

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Solution

The fourth proportional to 108,498.85, 149,628.49 and 74,447.26 is: 102,668.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,498.85 : 149,628.49 = 74,447.26 : x
  2. Step 2: Convert to fraction form
    108,498.85/149,628.49 = 74,447.26/x
  3. Step 3: Cross multiply
    108,498.85x = 149,628.49 × 74,447.26
  4. Step 4: Simplify right side
    108,498.85x = 11,139,431,098.44
  5. Step 5: Solve for x
    x = 11,139,431,098.44/108,498.85
  6. Step 6: Final answer
    x = 102,668.66

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1.5x scale

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.