Home / 142,743,027.87-196,985,378.44-80,863,366.43

Finding the Fourth Proportional to 142,743,027.87, 196,985,378.44 and 80,863,366.43

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Solution

The fourth proportional to 142,743,027.87, 196,985,378.44 and 80,863,366.43 is: 111,591,445.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,743,027.87 : 196,985,378.44 = 80,863,366.43 : x
  2. Step 2: Convert to fraction form
    142,743,027.87/196,985,378.44 = 80,863,366.43/x
  3. Step 3: Cross multiply
    142,743,027.87x = 196,985,378.44 × 80,863,366.43
  4. Step 4: Simplify right side
    142,743,027.87x = 15,928,900,836,756,698
  5. Step 5: Solve for x
    x = 15,928,900,836,756,698/142,743,027.87
  6. Step 6: Final answer
    x = 111,591,445.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.