Home / 89,861.20-134,705.40-69,859.60

Finding the Fourth Proportional to 89,861.20, 134,705.40 and 69,859.60

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Solution

The fourth proportional to 89,861.20, 134,705.40 and 69,859.60 is: 104,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,861.20 : 134,705.40 = 69,859.60 : x
  2. Step 2: Convert to fraction form
    89,861.20/134,705.40 = 69,859.60/x
  3. Step 3: Cross multiply
    89,861.20x = 134,705.40 × 69,859.60
  4. Step 4: Simplify right side
    89,861.20x = 9,410,465,361.84
  5. Step 5: Solve for x
    x = 9,410,465,361.84/89,861.20
  6. Step 6: Final answer
    x = 104,722.23

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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.