Home / 136,606.86-188,520.78-76,176.91

Finding the Fourth Proportional to 136,606.86, 188,520.78 and 76,176.91

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Solution

The fourth proportional to 136,606.86, 188,520.78 and 76,176.91 is: 105,125.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,606.86 : 188,520.78 = 76,176.91 : x
  2. Step 2: Convert to fraction form
    136,606.86/188,520.78 = 76,176.91/x
  3. Step 3: Cross multiply
    136,606.86x = 188,520.78 × 76,176.91
  4. Step 4: Simplify right side
    136,606.86x = 14,360,930,491.19
  5. Step 5: Solve for x
    x = 14,360,930,491.19/136,606.86
  6. Step 6: Final answer
    x = 105,125.98

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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.