Home / 106,126.43-159,189.66-72,745.29

Finding the Fourth Proportional to 106,126.43, 159,189.66 and 72,745.29

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Solution

The fourth proportional to 106,126.43, 159,189.66 and 72,745.29 is: 109,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,126.43 : 159,189.66 = 72,745.29 : x
  2. Step 2: Convert to fraction form
    106,126.43/159,189.66 = 72,745.29/x
  3. Step 3: Cross multiply
    106,126.43x = 159,189.66 × 72,745.29
  4. Step 4: Simplify right side
    106,126.43x = 11,580,297,981.70
  5. Step 5: Solve for x
    x = 11,580,297,981.70/106,126.43
  6. Step 6: Final answer
    x = 109,117.95

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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.