Home / 136,550.54-188,439.78-76,119.88

Finding the Fourth Proportional to 136,550.54, 188,439.78 and 76,119.88

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Solution

The fourth proportional to 136,550.54, 188,439.78 and 76,119.88 is: 105,045.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,550.54 : 188,439.78 = 76,119.88 : x
  2. Step 2: Convert to fraction form
    136,550.54/188,439.78 = 76,119.88/x
  3. Step 3: Cross multiply
    136,550.54x = 188,439.78 × 76,119.88
  4. Step 4: Simplify right side
    136,550.54x = 14,344,013,531.33
  5. Step 5: Solve for x
    x = 14,344,013,531.33/136,550.54
  6. Step 6: Final answer
    x = 105,045.45

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1.5x scale

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.