Home / 136,915.43-188,936.55-76,474.04

Finding the Fourth Proportional to 136,915.43, 188,936.55 and 76,474.04

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Solution

The fourth proportional to 136,915.43, 188,936.55 and 76,474.04 is: 105,530.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,915.43 : 188,936.55 = 76,474.04 : x
  2. Step 2: Convert to fraction form
    136,915.43/188,936.55 = 76,474.04/x
  3. Step 3: Cross multiply
    136,915.43x = 188,936.55 × 76,474.04
  4. Step 4: Simplify right side
    136,915.43x = 14,448,740,337.48
  5. Step 5: Solve for x
    x = 14,448,740,337.48/136,915.43
  6. Step 6: Final answer
    x = 105,530.41

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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.