Home / 138,694,485.14-191,397,911.86-79,956,870.20

Finding the Fourth Proportional to 138,694,485.14, 191,397,911.86 and 79,956,870.20

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Solution

The fourth proportional to 138,694,485.14, 191,397,911.86 and 79,956,870.20 is: 110,340,205.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694,485.14 : 191,397,911.86 = 79,956,870.20 : x
  2. Step 2: Convert to fraction form
    138,694,485.14/191,397,911.86 = 79,956,870.20/x
  3. Step 3: Cross multiply
    138,694,485.14x = 191,397,911.86 × 79,956,870.20
  4. Step 4: Simplify right side
    138,694,485.14x = 15,303,577,995,854,492
  5. Step 5: Solve for x
    x = 15,303,577,995,854,492/138,694,485.14
  6. Step 6: Final answer
    x = 110,340,205.52

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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.