Home / 131,321,091.20-196,981,636.80-120,739,510.40

Finding the Fourth Proportional to 131,321,091.20, 196,981,636.80 and 120,739,510.40

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Solution

The fourth proportional to 131,321,091.20, 196,981,636.80 and 120,739,510.40 is: 181,109,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,321,091.20 : 196,981,636.80 = 120,739,510.40 : x
  2. Step 2: Convert to fraction form
    131,321,091.20/196,981,636.80 = 120,739,510.40/x
  3. Step 3: Cross multiply
    131,321,091.20x = 196,981,636.80 × 120,739,510.40
  4. Step 4: Simplify right side
    131,321,091.20x = 23,783,466,385,022,624
  5. Step 5: Solve for x
    x = 23,783,466,385,022,624/131,321,091.20
  6. Step 6: Final answer
    x = 181,109,265.60

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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.