Home / 89,847.20-134,592.60-78,766.40

Finding the Fourth Proportional to 89,847.20, 134,592.60 and 78,766.40

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Solution

The fourth proportional to 89,847.20, 134,592.60 and 78,766.40 is: 117,993.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,847.20 : 134,592.60 = 78,766.40 : x
  2. Step 2: Convert to fraction form
    89,847.20/134,592.60 = 78,766.40/x
  3. Step 3: Cross multiply
    89,847.20x = 134,592.60 × 78,766.40
  4. Step 4: Simplify right side
    89,847.20x = 10,601,374,568.64
  5. Step 5: Solve for x
    x = 10,601,374,568.64/89,847.20
  6. Step 6: Final answer
    x = 117,993.38

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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.