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Finding the Fourth Proportional to 99,485.92, 137,286.28 and 54,162.92

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Solution

The fourth proportional to 99,485.92, 137,286.28 and 54,162.92 is: 74,742.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,485.92 : 137,286.28 = 54,162.92 : x
  2. Step 2: Convert to fraction form
    99,485.92/137,286.28 = 54,162.92/x
  3. Step 3: Cross multiply
    99,485.92x = 137,286.28 × 54,162.92
  4. Step 4: Simplify right side
    99,485.92x = 7,435,825,800.74
  5. Step 5: Solve for x
    x = 7,435,825,800.74/99,485.92
  6. Step 6: Final answer
    x = 74,742.49

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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.