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Finding the Fourth Proportional to 136,020.40, 204,030.60 and 80,724.40

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Solution

The fourth proportional to 136,020.40, 204,030.60 and 80,724.40 is: 121,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,020.40 : 204,030.60 = 80,724.40 : x
  2. Step 2: Convert to fraction form
    136,020.40/204,030.60 = 80,724.40/x
  3. Step 3: Cross multiply
    136,020.40x = 204,030.60 × 80,724.40
  4. Step 4: Simplify right side
    136,020.40x = 16,470,247,766.64
  5. Step 5: Solve for x
    x = 16,470,247,766.64/136,020.40
  6. Step 6: Final answer
    x = 121,086.60

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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.