Home / 149,369.28-206,132.04-81,389.52

Finding the Fourth Proportional to 149,369.28, 206,132.04 and 81,389.52

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Solution

The fourth proportional to 149,369.28, 206,132.04 and 81,389.52 is: 112,318.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,369.28 : 206,132.04 = 81,389.52 : x
  2. Step 2: Convert to fraction form
    149,369.28/206,132.04 = 81,389.52/x
  3. Step 3: Cross multiply
    149,369.28x = 206,132.04 × 81,389.52
  4. Step 4: Simplify right side
    149,369.28x = 16,776,987,792.22
  5. Step 5: Solve for x
    x = 16,776,987,792.22/149,369.28
  6. Step 6: Final answer
    x = 112,318.86

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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.