Home / 140,261,981.24-193,561,796.79-78,382,319.78

Finding the Fourth Proportional to 140,261,981.24, 193,561,796.79 and 78,382,319.78

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Solution

The fourth proportional to 140,261,981.24, 193,561,796.79 and 78,382,319.78 is: 108,167,748.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,261,981.24 : 193,561,796.79 = 78,382,319.78 : x
  2. Step 2: Convert to fraction form
    140,261,981.24/193,561,796.79 = 78,382,319.78/x
  3. Step 3: Cross multiply
    140,261,981.24x = 193,561,796.79 × 78,382,319.78
  4. Step 4: Simplify right side
    140,261,981.24x = 15,171,822,652,217,350
  5. Step 5: Solve for x
    x = 15,171,822,652,217,350/140,261,981.24
  6. Step 6: Final answer
    x = 108,167,748.09

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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.