Home / 107,982.40-161,973.60-81,738.40

Finding the Fourth Proportional to 107,982.40, 161,973.60 and 81,738.40

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Solution

The fourth proportional to 107,982.40, 161,973.60 and 81,738.40 is: 122,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,982.40 : 161,973.60 = 81,738.40 : x
  2. Step 2: Convert to fraction form
    107,982.40/161,973.60 = 81,738.40/x
  3. Step 3: Cross multiply
    107,982.40x = 161,973.60 × 81,738.40
  4. Step 4: Simplify right side
    107,982.40x = 13,239,462,906.24
  5. Step 5: Solve for x
    x = 13,239,462,906.24/107,982.40
  6. Step 6: Final answer
    x = 122,607.60

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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.