Home / 86,118.05-129,201.78-36,172.46

Finding the Fourth Proportional to 86,118.05, 129,201.78 and 36,172.46

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Solution

The fourth proportional to 86,118.05, 129,201.78 and 36,172.46 is: 54,269.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,118.05 : 129,201.78 = 36,172.46 : x
  2. Step 2: Convert to fraction form
    86,118.05/129,201.78 = 36,172.46/x
  3. Step 3: Cross multiply
    86,118.05x = 129,201.78 × 36,172.46
  4. Step 4: Simplify right side
    86,118.05x = 4,673,546,218.98
  5. Step 5: Solve for x
    x = 4,673,546,218.98/86,118.05
  6. Step 6: Final answer
    x = 54,269.07

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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.