Home / 90,629.70-135,944.55-83,631.30

Finding the Fourth Proportional to 90,629.70, 135,944.55 and 83,631.30

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Solution

The fourth proportional to 90,629.70, 135,944.55 and 83,631.30 is: 125,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,629.70 : 135,944.55 = 83,631.30 : x
  2. Step 2: Convert to fraction form
    90,629.70/135,944.55 = 83,631.30/x
  3. Step 3: Cross multiply
    90,629.70x = 135,944.55 × 83,631.30
  4. Step 4: Simplify right side
    90,629.70x = 11,369,219,444.42
  5. Step 5: Solve for x
    x = 11,369,219,444.42/90,629.70
  6. Step 6: Final answer
    x = 125,446.95

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Similar ratio
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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.