Home / 138,694,515.85-191,397,954.13-79,956,900.91

Finding the Fourth Proportional to 138,694,515.85, 191,397,954.13 and 79,956,900.91

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Solution

The fourth proportional to 138,694,515.85, 191,397,954.13 and 79,956,900.91 is: 110,340,247.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694,515.85 : 191,397,954.13 = 79,956,900.91 : x
  2. Step 2: Convert to fraction form
    138,694,515.85/191,397,954.13 = 79,956,900.91/x
  3. Step 3: Cross multiply
    138,694,515.85x = 191,397,954.13 × 79,956,900.91
  4. Step 4: Simplify right side
    138,694,515.85x = 15,303,587,252,070,748
  5. Step 5: Solve for x
    x = 15,303,587,252,070,748/138,694,515.85
  6. Step 6: Final answer
    x = 110,340,247.84

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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.