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Finding the Fourth Proportional to 101,304.88, 139,785.96 and 63,591.28

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Solution

The fourth proportional to 101,304.88, 139,785.96 and 63,591.28 is: 87,746.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,304.88 : 139,785.96 = 63,591.28 : x
  2. Step 2: Convert to fraction form
    101,304.88/139,785.96 = 63,591.28/x
  3. Step 3: Cross multiply
    101,304.88x = 139,785.96 × 63,591.28
  4. Step 4: Simplify right side
    101,304.88x = 8,889,168,122.43
  5. Step 5: Solve for x
    x = 8,889,168,122.43/101,304.88
  6. Step 6: Final answer
    x = 87,746.69

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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.