Home / 138,984,215.85-191,718,531.86-86,682,449.43

Finding the Fourth Proportional to 138,984,215.85, 191,718,531.86 and 86,682,449.43

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Solution

The fourth proportional to 138,984,215.85, 191,718,531.86 and 86,682,449.43 is: 119,572,081.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,984,215.85 : 191,718,531.86 = 86,682,449.43 : x
  2. Step 2: Convert to fraction form
    138,984,215.85/191,718,531.86 = 86,682,449.43/x
  3. Step 3: Cross multiply
    138,984,215.85x = 191,718,531.86 × 86,682,449.43
  4. Step 4: Simplify right side
    138,984,215.85x = 16,618,631,942,314,882
  5. Step 5: Solve for x
    x = 16,618,631,942,314,882/138,984,215.85
  6. Step 6: Final answer
    x = 119,572,081.19

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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.