Home / 105,619.20-158,515.20-102,163.20

Finding the Fourth Proportional to 105,619.20, 158,515.20 and 102,163.20

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Solution

The fourth proportional to 105,619.20, 158,515.20 and 102,163.20 is: 153,328.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,619.20 : 158,515.20 = 102,163.20 : x
  2. Step 2: Convert to fraction form
    105,619.20/158,515.20 = 102,163.20/x
  3. Step 3: Cross multiply
    105,619.20x = 158,515.20 × 102,163.20
  4. Step 4: Simplify right side
    105,619.20x = 16,194,420,080.64
  5. Step 5: Solve for x
    x = 16,194,420,080.64/105,619.20
  6. Step 6: Final answer
    x = 153,328.37

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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.