Home / 89,724.60-134,586.90-80,976.60

Finding the Fourth Proportional to 89,724.60, 134,586.90 and 80,976.60

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Solution

The fourth proportional to 89,724.60, 134,586.90 and 80,976.60 is: 121,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,724.60 : 134,586.90 = 80,976.60 : x
  2. Step 2: Convert to fraction form
    89,724.60/134,586.90 = 80,976.60/x
  3. Step 3: Cross multiply
    89,724.60x = 134,586.90 × 80,976.60
  4. Step 4: Simplify right side
    89,724.60x = 10,898,389,566.54
  5. Step 5: Solve for x
    x = 10,898,389,566.54/89,724.60
  6. Step 6: Final answer
    x = 121,464.90

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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.