Home / 113,099.73-155,982.21-80,774.50

Finding the Fourth Proportional to 113,099.73, 155,982.21 and 80,774.50

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Solution

The fourth proportional to 113,099.73, 155,982.21 and 80,774.50 is: 111,400.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,099.73 : 155,982.21 = 80,774.50 : x
  2. Step 2: Convert to fraction form
    113,099.73/155,982.21 = 80,774.50/x
  3. Step 3: Cross multiply
    113,099.73x = 155,982.21 × 80,774.50
  4. Step 4: Simplify right side
    113,099.73x = 12,599,385,021.65
  5. Step 5: Solve for x
    x = 12,599,385,021.65/113,099.73
  6. Step 6: Final answer
    x = 111,400.66

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1.5x scale

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.