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Finding the Fourth Proportional to 108,196.66, 149,281.74 and 74,213.56

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Solution

The fourth proportional to 108,196.66, 149,281.74 and 74,213.56 is: 102,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,196.66 : 149,281.74 = 74,213.56 : x
  2. Step 2: Convert to fraction form
    108,196.66/149,281.74 = 74,213.56/x
  3. Step 3: Cross multiply
    108,196.66x = 149,281.74 × 74,213.56
  4. Step 4: Simplify right side
    108,196.66x = 11,078,729,368.39
  5. Step 5: Solve for x
    x = 11,078,729,368.39/108,196.66
  6. Step 6: Final answer
    x = 102,394.37

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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.