Home / 136,760.08-188,738.40-76,342.60

Finding the Fourth Proportional to 136,760.08, 188,738.40 and 76,342.60

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Solution

The fourth proportional to 136,760.08, 188,738.40 and 76,342.60 is: 105,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,760.08 : 188,738.40 = 76,342.60 : x
  2. Step 2: Convert to fraction form
    136,760.08/188,738.40 = 76,342.60/x
  3. Step 3: Cross multiply
    136,760.08x = 188,738.40 × 76,342.60
  4. Step 4: Simplify right side
    136,760.08x = 14,408,780,175.84
  5. Step 5: Solve for x
    x = 14,408,780,175.84/136,760.08
  6. Step 6: Final answer
    x = 105,358.09

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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.