Home / 143,915,264.82-198,603,063.41-77,835,768.84

Finding the Fourth Proportional to 143,915,264.82, 198,603,063.41 and 77,835,768.84

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Solution

The fourth proportional to 143,915,264.82, 198,603,063.41 and 77,835,768.84 is: 107,413,359.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,915,264.82 : 198,603,063.41 = 77,835,768.84 : x
  2. Step 2: Convert to fraction form
    143,915,264.82/198,603,063.41 = 77,835,768.84/x
  3. Step 3: Cross multiply
    143,915,264.82x = 198,603,063.41 × 77,835,768.84
  4. Step 4: Simplify right side
    143,915,264.82x = 15,458,422,134,107,444
  5. Step 5: Solve for x
    x = 15,458,422,134,107,444/143,915,264.82
  6. Step 6: Final answer
    x = 107,413,359.89

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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.