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Finding the Fourth Proportional to 134,768, 185,976 and 74,338.88

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Solution

The fourth proportional to 134,768, 185,976 and 74,338.88 is: 102,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,768 : 185,976 = 74,338.88 : x
  2. Step 2: Convert to fraction form
    134,768/185,976 = 74,338.88/x
  3. Step 3: Cross multiply
    134,768x = 185,976 × 74,338.88
  4. Step 4: Simplify right side
    134,768x = 13,825,247,546.88
  5. Step 5: Solve for x
    x = 13,825,247,546.88/134,768
  6. Step 6: Final answer
    x = 102,585.54

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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.