Home / 91,639.08-126,157.50-82,191.24

Finding the Fourth Proportional to 91,639.08, 126,157.50 and 82,191.24

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Solution

The fourth proportional to 91,639.08, 126,157.50 and 82,191.24 is: 113,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,639.08 : 126,157.50 = 82,191.24 : x
  2. Step 2: Convert to fraction form
    91,639.08/126,157.50 = 82,191.24/x
  3. Step 3: Cross multiply
    91,639.08x = 126,157.50 × 82,191.24
  4. Step 4: Simplify right side
    91,639.08x = 10,369,041,360.30
  5. Step 5: Solve for x
    x = 10,369,041,360.30/91,639.08
  6. Step 6: Final answer
    x = 113,150.87

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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.