Home / 99,918.40-149,853.60-57,707.20

Finding the Fourth Proportional to 99,918.40, 149,853.60 and 57,707.20

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Solution

The fourth proportional to 99,918.40, 149,853.60 and 57,707.20 is: 86,546.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,918.40 : 149,853.60 = 57,707.20 : x
  2. Step 2: Convert to fraction form
    99,918.40/149,853.60 = 57,707.20/x
  3. Step 3: Cross multiply
    99,918.40x = 149,853.60 × 57,707.20
  4. Step 4: Simplify right side
    99,918.40x = 8,647,631,665.92
  5. Step 5: Solve for x
    x = 8,647,631,665.92/99,918.40
  6. Step 6: Final answer
    x = 86,546.94

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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.