Home / 107,581.20-161,350.20-51,421.20

Finding the Fourth Proportional to 107,581.20, 161,350.20 and 51,421.20

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Solution

The fourth proportional to 107,581.20, 161,350.20 and 51,421.20 is: 77,121.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,581.20 : 161,350.20 = 51,421.20 : x
  2. Step 2: Convert to fraction form
    107,581.20/161,350.20 = 51,421.20/x
  3. Step 3: Cross multiply
    107,581.20x = 161,350.20 × 51,421.20
  4. Step 4: Simplify right side
    107,581.20x = 8,296,820,904.24
  5. Step 5: Solve for x
    x = 8,296,820,904.24/107,581.20
  6. Step 6: Final answer
    x = 77,121.48

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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.