Home / 142,175,666.38-196,202,686.44-79,451,764.78

Finding the Fourth Proportional to 142,175,666.38, 196,202,686.44 and 79,451,764.78

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Solution

The fourth proportional to 142,175,666.38, 196,202,686.44 and 79,451,764.78 is: 109,643,584.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,175,666.38 : 196,202,686.44 = 79,451,764.78 : x
  2. Step 2: Convert to fraction form
    142,175,666.38/196,202,686.44 = 79,451,764.78/x
  3. Step 3: Cross multiply
    142,175,666.38x = 196,202,686.44 × 79,451,764.78
  4. Step 4: Simplify right side
    142,175,666.38x = 15,588,649,692,234,976
  5. Step 5: Solve for x
    x = 15,588,649,692,234,976/142,175,666.38
  6. Step 6: Final answer
    x = 109,643,584.51

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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.