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Finding the Fourth Proportional to 108,396.82, 149,605.31 and 74,377.23

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Solution

The fourth proportional to 108,396.82, 149,605.31 and 74,377.23 is: 102,652.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,396.82 : 149,605.31 = 74,377.23 : x
  2. Step 2: Convert to fraction form
    108,396.82/149,605.31 = 74,377.23/x
  3. Step 3: Cross multiply
    108,396.82x = 149,605.31 × 74,377.23
  4. Step 4: Simplify right side
    108,396.82x = 11,127,227,803.06
  5. Step 5: Solve for x
    x = 11,127,227,803.06/108,396.82
  6. Step 6: Final answer
    x = 102,652.71

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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.