Home / 107,823.60-161,346.60-72,831.60

Finding the Fourth Proportional to 107,823.60, 161,346.60 and 72,831.60

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Solution

The fourth proportional to 107,823.60, 161,346.60 and 72,831.60 is: 108,984.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,823.60 : 161,346.60 = 72,831.60 : x
  2. Step 2: Convert to fraction form
    107,823.60/161,346.60 = 72,831.60/x
  3. Step 3: Cross multiply
    107,823.60x = 161,346.60 × 72,831.60
  4. Step 4: Simplify right side
    107,823.60x = 11,751,131,032.56
  5. Step 5: Solve for x
    x = 11,751,131,032.56/107,823.60
  6. Step 6: Final answer
    x = 108,984.78

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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.