Home / 123,609,291.66-170,589,444.30-81,720,578.97

Finding the Fourth Proportional to 123,609,291.66, 170,589,444.30 and 81,720,578.97

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Solution

The fourth proportional to 123,609,291.66, 170,589,444.30 and 81,720,578.97 is: 112,780,099.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,609,291.66 : 170,589,444.30 = 81,720,578.97 : x
  2. Step 2: Convert to fraction form
    123,609,291.66/170,589,444.30 = 81,720,578.97/x
  3. Step 3: Cross multiply
    123,609,291.66x = 170,589,444.30 × 81,720,578.97
  4. Step 4: Simplify right side
    123,609,291.66x = 13,940,668,154,366,568
  5. Step 5: Solve for x
    x = 13,940,668,154,366,568/123,609,291.66
  6. Step 6: Final answer
    x = 112,780,099.03

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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.