Home / 136,915.09-188,936.07-76,473.70

Finding the Fourth Proportional to 136,915.09, 188,936.07 and 76,473.70

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Solution

The fourth proportional to 136,915.09, 188,936.07 and 76,473.70 is: 105,529.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,915.09 : 188,936.07 = 76,473.70 : x
  2. Step 2: Convert to fraction form
    136,915.09/188,936.07 = 76,473.70/x
  3. Step 3: Cross multiply
    136,915.09x = 188,936.07 × 76,473.70
  4. Step 4: Simplify right side
    136,915.09x = 14,448,640,336.36
  5. Step 5: Solve for x
    x = 14,448,640,336.36/136,915.09
  6. Step 6: Final answer
    x = 105,529.93

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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.