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Finding the Fourth Proportional to 89,861.80, 134,792.70 and 89,278.60

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Solution

The fourth proportional to 89,861.80, 134,792.70 and 89,278.60 is: 133,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,861.80 : 134,792.70 = 89,278.60 : x
  2. Step 2: Convert to fraction form
    89,861.80/134,792.70 = 89,278.60/x
  3. Step 3: Cross multiply
    89,861.80x = 134,792.70 × 89,278.60
  4. Step 4: Simplify right side
    89,861.80x = 12,034,103,546.22
  5. Step 5: Solve for x
    x = 12,034,103,546.22/89,861.80
  6. Step 6: Final answer
    x = 133,917.90

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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.