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Finding the Fourth Proportional to 99,286.88, 137,015.89 and 54,574.88

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Solution

The fourth proportional to 99,286.88, 137,015.89 and 54,574.88 is: 75,313.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,286.88 : 137,015.89 = 54,574.88 : x
  2. Step 2: Convert to fraction form
    99,286.88/137,015.89 = 54,574.88/x
  3. Step 3: Cross multiply
    99,286.88x = 137,015.89 × 54,574.88
  4. Step 4: Simplify right side
    99,286.88x = 7,477,625,069.76
  5. Step 5: Solve for x
    x = 7,477,625,069.76/99,286.88
  6. Step 6: Final answer
    x = 75,313.33

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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.