Home / 107,786.49-148,745.62-64,766.70

Finding the Fourth Proportional to 107,786.49, 148,745.62 and 64,766.70

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Solution

The fourth proportional to 107,786.49, 148,745.62 and 64,766.70 is: 89,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,786.49 : 148,745.62 = 64,766.70 : x
  2. Step 2: Convert to fraction form
    107,786.49/148,745.62 = 64,766.70/x
  3. Step 3: Cross multiply
    107,786.49x = 148,745.62 × 64,766.70
  4. Step 4: Simplify right side
    107,786.49x = 9,633,762,411.04
  5. Step 5: Solve for x
    x = 9,633,762,411.04/107,786.49
  6. Step 6: Final answer
    x = 89,378.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.