Home / 91,682,994.28-137,363,057.88-86,221,440.40

Finding the Fourth Proportional to 91,682,994.28, 137,363,057.88 and 86,221,440.40

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Solution

The fourth proportional to 91,682,994.28, 137,363,057.88 and 86,221,440.40 is: 129,180,343.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,682,994.28 : 137,363,057.88 = 86,221,440.40 : x
  2. Step 2: Convert to fraction form
    91,682,994.28/137,363,057.88 = 86,221,440.40/x
  3. Step 3: Cross multiply
    91,682,994.28x = 137,363,057.88 × 86,221,440.40
  4. Step 4: Simplify right side
    91,682,994.28x = 11,843,640,708,162,170
  5. Step 5: Solve for x
    x = 11,843,640,708,162,170/91,682,994.28
  6. Step 6: Final answer
    x = 129,180,343.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.