Home / 123,375,030.12-170,335,072.94-79,398,620.69

Finding the Fourth Proportional to 123,375,030.12, 170,335,072.94 and 79,398,620.69

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Solution

The fourth proportional to 123,375,030.12, 170,335,072.94 and 79,398,620.69 is: 109,619,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,375,030.12 : 170,335,072.94 = 79,398,620.69 : x
  2. Step 2: Convert to fraction form
    123,375,030.12/170,335,072.94 = 79,398,620.69/x
  3. Step 3: Cross multiply
    123,375,030.12x = 170,335,072.94 × 79,398,620.69
  4. Step 4: Simplify right side
    123,375,030.12x = 13,524,369,845,317,876
  5. Step 5: Solve for x
    x = 13,524,369,845,317,876/123,375,030.12
  6. Step 6: Final answer
    x = 109,619,992.25

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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.