Home / 120,536,791.35-166,376,172.74-78,727,248.33

Finding the Fourth Proportional to 120,536,791.35, 166,376,172.74 and 78,727,248.33

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Solution

The fourth proportional to 120,536,791.35, 166,376,172.74 and 78,727,248.33 is: 108,666,724.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,536,791.35 : 166,376,172.74 = 78,727,248.33 : x
  2. Step 2: Convert to fraction form
    120,536,791.35/166,376,172.74 = 78,727,248.33/x
  3. Step 3: Cross multiply
    120,536,791.35x = 166,376,172.74 × 78,727,248.33
  4. Step 4: Simplify right side
    120,536,791.35x = 13,098,338,267,103,322
  5. Step 5: Solve for x
    x = 13,098,338,267,103,322/120,536,791.35
  6. Step 6: Final answer
    x = 108,666,724.25

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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.