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Finding the Fourth Proportional to 91,267.36, 136,914.18 and 28,092.88

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Solution

The fourth proportional to 91,267.36, 136,914.18 and 28,092.88 is: 42,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,267.36 : 136,914.18 = 28,092.88 : x
  2. Step 2: Convert to fraction form
    91,267.36/136,914.18 = 28,092.88/x
  3. Step 3: Cross multiply
    91,267.36x = 136,914.18 × 28,092.88
  4. Step 4: Simplify right side
    91,267.36x = 3,846,313,629.04
  5. Step 5: Solve for x
    x = 3,846,313,629.04/91,267.36
  6. Step 6: Final answer
    x = 42,143.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.