Home / 99,928.92-137,903.40-54,607.80

Finding the Fourth Proportional to 99,928.92, 137,903.40 and 54,607.80

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Solution

The fourth proportional to 99,928.92, 137,903.40 and 54,607.80 is: 75,359.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,928.92 : 137,903.40 = 54,607.80 : x
  2. Step 2: Convert to fraction form
    99,928.92/137,903.40 = 54,607.80/x
  3. Step 3: Cross multiply
    99,928.92x = 137,903.40 × 54,607.80
  4. Step 4: Simplify right side
    99,928.92x = 7,530,601,286.52
  5. Step 5: Solve for x
    x = 7,530,601,286.52/99,928.92
  6. Step 6: Final answer
    x = 75,359.58

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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.