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Finding the Fourth Proportional to 89,895.60, 134,843.40 and 79,873.20

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Solution

The fourth proportional to 89,895.60, 134,843.40 and 79,873.20 is: 119,809.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,895.60 : 134,843.40 = 79,873.20 : x
  2. Step 2: Convert to fraction form
    89,895.60/134,843.40 = 79,873.20/x
  3. Step 3: Cross multiply
    89,895.60x = 134,843.40 × 79,873.20
  4. Step 4: Simplify right side
    89,895.60x = 10,770,373,856.88
  5. Step 5: Solve for x
    x = 10,770,373,856.88/89,895.60
  6. Step 6: Final answer
    x = 119,809.80

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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.