Home / 89,788.82-133,623.10-86,798.84

Finding the Fourth Proportional to 89,788.82, 133,623.10 and 86,798.84

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Solution

The fourth proportional to 89,788.82, 133,623.10 and 86,798.84 is: 129,173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,788.82 : 133,623.10 = 86,798.84 : x
  2. Step 2: Convert to fraction form
    89,788.82/133,623.10 = 86,798.84/x
  3. Step 3: Cross multiply
    89,788.82x = 133,623.10 × 86,798.84
  4. Step 4: Simplify right side
    89,788.82x = 11,598,330,077.20
  5. Step 5: Solve for x
    x = 11,598,330,077.20/89,788.82
  6. Step 6: Final answer
    x = 129,173.43

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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.