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Finding the Fourth Proportional to 127,676.70, 191,624.40 and 56,708.55

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Solution

The fourth proportional to 127,676.70, 191,624.40 and 56,708.55 is: 85,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,676.70 : 191,624.40 = 56,708.55 : x
  2. Step 2: Convert to fraction form
    127,676.70/191,624.40 = 56,708.55/x
  3. Step 3: Cross multiply
    127,676.70x = 191,624.40 × 56,708.55
  4. Step 4: Simplify right side
    127,676.70x = 10,866,741,868.62
  5. Step 5: Solve for x
    x = 10,866,741,868.62/127,676.70
  6. Step 6: Final answer
    x = 85,111.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.