Home / 89,764.10-133,586.57-86,774.25

Finding the Fourth Proportional to 89,764.10, 133,586.57 and 86,774.25

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Solution

The fourth proportional to 89,764.10, 133,586.57 and 86,774.25 is: 129,137.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,764.10 : 133,586.57 = 86,774.25 : x
  2. Step 2: Convert to fraction form
    89,764.10/133,586.57 = 86,774.25/x
  3. Step 3: Cross multiply
    89,764.10x = 133,586.57 × 86,774.25
  4. Step 4: Simplify right side
    89,764.10x = 11,591,873,987.95
  5. Step 5: Solve for x
    x = 11,591,873,987.95/89,764.10
  6. Step 6: Final answer
    x = 129,137.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.