Home / 142,833,787,679.71-197,110,659,171.84-78,604,511,988.21

Finding the Fourth Proportional to 142,833,787,679.71, 197,110,659,171.84 and 78,604,511,988.21

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Solution

The fourth proportional to 142,833,787,679.71, 197,110,659,171.84 and 78,604,511,988.21 is: 108,474,244,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,833,787,679.71 : 197,110,659,171.84 = 78,604,511,988.21 : x
  2. Step 2: Convert to fraction form
    142,833,787,679.71/197,110,659,171.84 = 78,604,511,988.21/x
  3. Step 3: Cross multiply
    142,833,787,679.71x = 197,110,659,171.84 × 78,604,511,988.21
  4. Step 4: Simplify right side
    142,833,787,679.71x = 15,493,787,171,876,874,747,904
  5. Step 5: Solve for x
    x = 15,493,787,171,876,874,747,904/142,833,787,679.71
  6. Step 6: Final answer
    x = 108,474,244,249.69

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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.