Home / 127,455.72-191,209.10-71,375.58

Finding the Fourth Proportional to 127,455.72, 191,209.10 and 71,375.58

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Solution

The fourth proportional to 127,455.72, 191,209.10 and 71,375.58 is: 107,077.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,455.72 : 191,209.10 = 71,375.58 : x
  2. Step 2: Convert to fraction form
    127,455.72/191,209.10 = 71,375.58/x
  3. Step 3: Cross multiply
    127,455.72x = 191,209.10 × 71,375.58
  4. Step 4: Simplify right side
    127,455.72x = 13,647,660,592.22
  5. Step 5: Solve for x
    x = 13,647,660,592.22/127,455.72
  6. Step 6: Final answer
    x = 107,077.66

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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.