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Finding the Fourth Proportional to 101,256.52, 139,630.10 and 67,252.68

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Solution

The fourth proportional to 101,256.52, 139,630.10 and 67,252.68 is: 92,739.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,256.52 : 139,630.10 = 67,252.68 : x
  2. Step 2: Convert to fraction form
    101,256.52/139,630.10 = 67,252.68/x
  3. Step 3: Cross multiply
    101,256.52x = 139,630.10 × 67,252.68
  4. Step 4: Simplify right side
    101,256.52x = 9,390,498,433.67
  5. Step 5: Solve for x
    x = 9,390,498,433.67/101,256.52
  6. Step 6: Final answer
    x = 92,739.69

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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.