Home / 136,601.78-188,513.79-76,171.83

Finding the Fourth Proportional to 136,601.78, 188,513.79 and 76,171.83

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Solution

The fourth proportional to 136,601.78, 188,513.79 and 76,171.83 is: 105,118.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,601.78 : 188,513.79 = 76,171.83 : x
  2. Step 2: Convert to fraction form
    136,601.78/188,513.79 = 76,171.83/x
  3. Step 3: Cross multiply
    136,601.78x = 188,513.79 × 76,171.83
  4. Step 4: Simplify right side
    136,601.78x = 14,359,440,364.54
  5. Step 5: Solve for x
    x = 14,359,440,364.54/136,601.78
  6. Step 6: Final answer
    x = 105,118.98

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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.