Home / 107,917.20-161,875.80-55,429.20

Finding the Fourth Proportional to 107,917.20, 161,875.80 and 55,429.20

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Solution

The fourth proportional to 107,917.20, 161,875.80 and 55,429.20 is: 83,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,917.20 : 161,875.80 = 55,429.20 : x
  2. Step 2: Convert to fraction form
    107,917.20/161,875.80 = 55,429.20/x
  3. Step 3: Cross multiply
    107,917.20x = 161,875.80 × 55,429.20
  4. Step 4: Simplify right side
    107,917.20x = 8,972,646,093.36
  5. Step 5: Solve for x
    x = 8,972,646,093.36/107,917.20
  6. Step 6: Final answer
    x = 83,143.80

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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.