Home / 136,658.36-188,569.68-76,221.92

Finding the Fourth Proportional to 136,658.36, 188,569.68 and 76,221.92

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Solution

The fourth proportional to 136,658.36, 188,569.68 and 76,221.92 is: 105,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,658.36 : 188,569.68 = 76,221.92 : x
  2. Step 2: Convert to fraction form
    136,658.36/188,569.68 = 76,221.92/x
  3. Step 3: Cross multiply
    136,658.36x = 188,569.68 × 76,221.92
  4. Step 4: Simplify right side
    136,658.36x = 14,373,143,063.39
  5. Step 5: Solve for x
    x = 14,373,143,063.39/136,658.36
  6. Step 6: Final answer
    x = 105,175.73

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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.