Home / 91,856.80-137,785.20-91,273.60

Finding the Fourth Proportional to 91,856.80, 137,785.20 and 91,273.60

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Solution

The fourth proportional to 91,856.80, 137,785.20 and 91,273.60 is: 136,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,856.80 : 137,785.20 = 91,273.60 : x
  2. Step 2: Convert to fraction form
    91,856.80/137,785.20 = 91,273.60/x
  3. Step 3: Cross multiply
    91,856.80x = 137,785.20 × 91,273.60
  4. Step 4: Simplify right side
    91,856.80x = 12,576,151,230.72
  5. Step 5: Solve for x
    x = 12,576,151,230.72/91,856.80
  6. Step 6: Final answer
    x = 136,910.40

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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.