Home / 124,297.20-186,008.40-86,680.80

Finding the Fourth Proportional to 124,297.20, 186,008.40 and 86,680.80

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Solution

The fourth proportional to 124,297.20, 186,008.40 and 86,680.80 is: 129,716.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,297.20 : 186,008.40 = 86,680.80 : x
  2. Step 2: Convert to fraction form
    124,297.20/186,008.40 = 86,680.80/x
  3. Step 3: Cross multiply
    124,297.20x = 186,008.40 × 86,680.80
  4. Step 4: Simplify right side
    124,297.20x = 16,123,356,918.72
  5. Step 5: Solve for x
    x = 16,123,356,918.72/124,297.20
  6. Step 6: Final answer
    x = 129,716.17

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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.