Home / 107,629.20-161,443.80-102,790.80

Finding the Fourth Proportional to 107,629.20, 161,443.80 and 102,790.80

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Solution

The fourth proportional to 107,629.20, 161,443.80 and 102,790.80 is: 154,186.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,629.20 : 161,443.80 = 102,790.80 : x
  2. Step 2: Convert to fraction form
    107,629.20/161,443.80 = 102,790.80/x
  3. Step 3: Cross multiply
    107,629.20x = 161,443.80 × 102,790.80
  4. Step 4: Simplify right side
    107,629.20x = 16,594,937,357.04
  5. Step 5: Solve for x
    x = 16,594,937,357.04/107,629.20
  6. Step 6: Final answer
    x = 154,186.20

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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.