Home / 89,039.20-133,558.80-85,102.60

Finding the Fourth Proportional to 89,039.20, 133,558.80 and 85,102.60

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Solution

The fourth proportional to 89,039.20, 133,558.80 and 85,102.60 is: 127,653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,039.20 : 133,558.80 = 85,102.60 : x
  2. Step 2: Convert to fraction form
    89,039.20/133,558.80 = 85,102.60/x
  3. Step 3: Cross multiply
    89,039.20x = 133,558.80 × 85,102.60
  4. Step 4: Simplify right side
    89,039.20x = 11,366,201,132.88
  5. Step 5: Solve for x
    x = 11,366,201,132.88/89,039.20
  6. Step 6: Final answer
    x = 127,653.90

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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.