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Finding the Fourth Proportional to 168,028.40, 252,064.20 and 83,831.60

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Solution

The fourth proportional to 168,028.40, 252,064.20 and 83,831.60 is: 125,758.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,028.40 : 252,064.20 = 83,831.60 : x
  2. Step 2: Convert to fraction form
    168,028.40/252,064.20 = 83,831.60/x
  3. Step 3: Cross multiply
    168,028.40x = 252,064.20 × 83,831.60
  4. Step 4: Simplify right side
    168,028.40x = 21,130,945,188.72
  5. Step 5: Solve for x
    x = 21,130,945,188.72/168,028.40
  6. Step 6: Final answer
    x = 125,758.18

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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.