Home / 109,113.56-163,441.91-87,933.68

Finding the Fourth Proportional to 109,113.56, 163,441.91 and 87,933.68

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Solution

The fourth proportional to 109,113.56, 163,441.91 and 87,933.68 is: 131,716.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,113.56 : 163,441.91 = 87,933.68 : x
  2. Step 2: Convert to fraction form
    109,113.56/163,441.91 = 87,933.68/x
  3. Step 3: Cross multiply
    109,113.56x = 163,441.91 × 87,933.68
  4. Step 4: Simplify right side
    109,113.56x = 14,372,047,355.65
  5. Step 5: Solve for x
    x = 14,372,047,355.65/109,113.56
  6. Step 6: Final answer
    x = 131,716.42

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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.