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Finding the Fourth Proportional to 101,356.64, 139,880.64 and 67,304.96

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Solution

The fourth proportional to 101,356.64, 139,880.64 and 67,304.96 is: 92,886.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,356.64 : 139,880.64 = 67,304.96 : x
  2. Step 2: Convert to fraction form
    101,356.64/139,880.64 = 67,304.96/x
  3. Step 3: Cross multiply
    101,356.64x = 139,880.64 × 67,304.96
  4. Step 4: Simplify right side
    101,356.64x = 9,414,660,879.97
  5. Step 5: Solve for x
    x = 9,414,660,879.97/101,356.64
  6. Step 6: Final answer
    x = 92,886.47

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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.