Home / 107,927.20-161,890.80-99,632.80

Finding the Fourth Proportional to 107,927.20, 161,890.80 and 99,632.80

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Solution

The fourth proportional to 107,927.20, 161,890.80 and 99,632.80 is: 149,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,927.20 : 161,890.80 = 99,632.80 : x
  2. Step 2: Convert to fraction form
    107,927.20/161,890.80 = 99,632.80/x
  3. Step 3: Cross multiply
    107,927.20x = 161,890.80 × 99,632.80
  4. Step 4: Simplify right side
    107,927.20x = 16,129,633,698.24
  5. Step 5: Solve for x
    x = 16,129,633,698.24/107,927.20
  6. Step 6: Final answer
    x = 149,449.20

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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.