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Finding the Fourth Proportional to 134,338, 185,387.52 and 74,722

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Solution

The fourth proportional to 134,338, 185,387.52 and 74,722 is: 103,116.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,338 : 185,387.52 = 74,722 : x
  2. Step 2: Convert to fraction form
    134,338/185,387.52 = 74,722/x
  3. Step 3: Cross multiply
    134,338x = 185,387.52 × 74,722
  4. Step 4: Simplify right side
    134,338x = 13,852,526,269.44
  5. Step 5: Solve for x
    x = 13,852,526,269.44/134,338
  6. Step 6: Final answer
    x = 103,116.96

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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.