Home / 138,728,051.53-208,029,882.08-82,667,414.73

Finding the Fourth Proportional to 138,728,051.53, 208,029,882.08 and 82,667,414.73

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Solution

The fourth proportional to 138,728,051.53, 208,029,882.08 and 82,667,414.73 is: 123,964,060.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,728,051.53 : 208,029,882.08 = 82,667,414.73 : x
  2. Step 2: Convert to fraction form
    138,728,051.53/208,029,882.08 = 82,667,414.73/x
  3. Step 3: Cross multiply
    138,728,051.53x = 208,029,882.08 × 82,667,414.73
  4. Step 4: Simplify right side
    138,728,051.53x = 17,197,292,537,492,378
  5. Step 5: Solve for x
    x = 17,197,292,537,492,378/138,728,051.53
  6. Step 6: Final answer
    x = 123,964,060.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.