Home / 138,984,220.35-191,718,538.02-86,682,453.93

Finding the Fourth Proportional to 138,984,220.35, 191,718,538.02 and 86,682,453.93

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Solution

The fourth proportional to 138,984,220.35, 191,718,538.02 and 86,682,453.93 is: 119,572,087.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,984,220.35 : 191,718,538.02 = 86,682,453.93 : x
  2. Step 2: Convert to fraction form
    138,984,220.35/191,718,538.02 = 86,682,453.93/x
  3. Step 3: Cross multiply
    138,984,220.35x = 191,718,538.02 × 86,682,453.93
  4. Step 4: Simplify right side
    138,984,220.35x = 16,618,633,339,445,606
  5. Step 5: Solve for x
    x = 16,618,633,339,445,606/138,984,220.35
  6. Step 6: Final answer
    x = 119,572,087.38

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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.