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Finding the Fourth Proportional to 127,497.90, 191,047.05 and 80,651.82

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Solution

The fourth proportional to 127,497.90, 191,047.05 and 80,651.82 is: 120,851.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,497.90 : 191,047.05 = 80,651.82 : x
  2. Step 2: Convert to fraction form
    127,497.90/191,047.05 = 80,651.82/x
  3. Step 3: Cross multiply
    127,497.90x = 191,047.05 × 80,651.82
  4. Step 4: Simplify right side
    127,497.90x = 15,408,292,288.13
  5. Step 5: Solve for x
    x = 15,408,292,288.13/127,497.90
  6. Step 6: Final answer
    x = 120,851.34

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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.