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Finding the Fourth Proportional to 101,216.12, 139,736.54 and 67,270.64

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Solution

The fourth proportional to 101,216.12, 139,736.54 and 67,270.64 is: 92,872.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,216.12 : 139,736.54 = 67,270.64 : x
  2. Step 2: Convert to fraction form
    101,216.12/139,736.54 = 67,270.64/x
  3. Step 3: Cross multiply
    101,216.12x = 139,736.54 × 67,270.64
  4. Step 4: Simplify right side
    101,216.12x = 9,400,165,946.68
  5. Step 5: Solve for x
    x = 9,400,165,946.68/101,216.12
  6. Step 6: Final answer
    x = 92,872.23

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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.