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Finding the Fourth Proportional to 100,727.52, 139,033.28 and 67,193.44

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Solution

The fourth proportional to 100,727.52, 139,033.28 and 67,193.44 is: 92,746.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,727.52 : 139,033.28 = 67,193.44 : x
  2. Step 2: Convert to fraction form
    100,727.52/139,033.28 = 67,193.44/x
  3. Step 3: Cross multiply
    100,727.52x = 139,033.28 × 67,193.44
  4. Step 4: Simplify right side
    100,727.52x = 9,342,124,357.68
  5. Step 5: Solve for x
    x = 9,342,124,357.68/100,727.52
  6. Step 6: Final answer
    x = 92,746.49

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1.5x scale

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.