Home / 138,694,506.12-191,397,940.65-79,956,891.18

Finding the Fourth Proportional to 138,694,506.12, 191,397,940.65 and 79,956,891.18

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Solution

The fourth proportional to 138,694,506.12, 191,397,940.65 and 79,956,891.18 is: 110,340,234.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694,506.12 : 191,397,940.65 = 79,956,891.18 : x
  2. Step 2: Convert to fraction form
    138,694,506.12/191,397,940.65 = 79,956,891.18/x
  3. Step 3: Cross multiply
    138,694,506.12x = 191,397,940.65 × 79,956,891.18
  4. Step 4: Simplify right side
    138,694,506.12x = 15,303,584,312,628,150
  5. Step 5: Solve for x
    x = 15,303,584,312,628,150/138,694,506.12
  6. Step 6: Final answer
    x = 110,340,234.38

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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.