Home / 127,511.37-191,092.09-80,680.41

Finding the Fourth Proportional to 127,511.37, 191,092.09 and 80,680.41

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Solution

The fourth proportional to 127,511.37, 191,092.09 and 80,680.41 is: 120,909.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,511.37 : 191,092.09 = 80,680.41 : x
  2. Step 2: Convert to fraction form
    127,511.37/191,092.09 = 80,680.41/x
  3. Step 3: Cross multiply
    127,511.37x = 191,092.09 × 80,680.41
  4. Step 4: Simplify right side
    127,511.37x = 15,417,388,168.96
  5. Step 5: Solve for x
    x = 15,417,388,168.96/127,511.37
  6. Step 6: Final answer
    x = 120,909.91

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1.5x scale

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.