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Finding the Fourth Proportional to 92,896.92, 128,208.66 and 55,171.16

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Solution

The fourth proportional to 92,896.92, 128,208.66 and 55,171.16 is: 76,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,896.92 : 128,208.66 = 55,171.16 : x
  2. Step 2: Convert to fraction form
    92,896.92/128,208.66 = 55,171.16/x
  3. Step 3: Cross multiply
    92,896.92x = 128,208.66 × 55,171.16
  4. Step 4: Simplify right side
    92,896.92x = 7,073,420,494.25
  5. Step 5: Solve for x
    x = 7,073,420,494.25/92,896.92
  6. Step 6: Final answer
    x = 76,142.68

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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.