Home / 136,391.72-188,213.24-75,135.90

Finding the Fourth Proportional to 136,391.72, 188,213.24 and 75,135.90

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Solution

The fourth proportional to 136,391.72, 188,213.24 and 75,135.90 is: 103,683.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,391.72 : 188,213.24 = 75,135.90 : x
  2. Step 2: Convert to fraction form
    136,391.72/188,213.24 = 75,135.90/x
  3. Step 3: Cross multiply
    136,391.72x = 188,213.24 × 75,135.90
  4. Step 4: Simplify right side
    136,391.72x = 14,141,569,862.57
  5. Step 5: Solve for x
    x = 14,141,569,862.57/136,391.72
  6. Step 6: Final answer
    x = 103,683.50

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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.