Home / 131,014,279.20-196,521,418.80-100,781,191.20

Finding the Fourth Proportional to 131,014,279.20, 196,521,418.80 and 100,781,191.20

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Solution

The fourth proportional to 131,014,279.20, 196,521,418.80 and 100,781,191.20 is: 151,171,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,014,279.20 : 196,521,418.80 = 100,781,191.20 : x
  2. Step 2: Convert to fraction form
    131,014,279.20/196,521,418.80 = 100,781,191.20/x
  3. Step 3: Cross multiply
    131,014,279.20x = 196,521,418.80 × 100,781,191.20
  4. Step 4: Simplify right side
    131,014,279.20x = 19,805,662,682,978,076
  5. Step 5: Solve for x
    x = 19,805,662,682,978,076/131,014,279.20
  6. Step 6: Final answer
    x = 151,171,786.80

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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.