Home / 131,231,325.60-196,846,988.40-80,212,989.60

Finding the Fourth Proportional to 131,231,325.60, 196,846,988.40 and 80,212,989.60

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Solution

The fourth proportional to 131,231,325.60, 196,846,988.40 and 80,212,989.60 is: 120,319,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,231,325.60 : 196,846,988.40 = 80,212,989.60 : x
  2. Step 2: Convert to fraction form
    131,231,325.60/196,846,988.40 = 80,212,989.60/x
  3. Step 3: Cross multiply
    131,231,325.60x = 196,846,988.40 × 80,212,989.60
  4. Step 4: Simplify right side
    131,231,325.60x = 15,789,685,433,320,520
  5. Step 5: Solve for x
    x = 15,789,685,433,320,520/131,231,325.60
  6. Step 6: Final answer
    x = 120,319,484.40

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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.