Home / 107,999.20-161,739.60-52,530.40

Finding the Fourth Proportional to 107,999.20, 161,739.60 and 52,530.40

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Solution

The fourth proportional to 107,999.20, 161,739.60 and 52,530.40 is: 78,669.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,999.20 : 161,739.60 = 52,530.40 : x
  2. Step 2: Convert to fraction form
    107,999.20/161,739.60 = 52,530.40/x
  3. Step 3: Cross multiply
    107,999.20x = 161,739.60 × 52,530.40
  4. Step 4: Simplify right side
    107,999.20x = 8,496,245,883.84
  5. Step 5: Solve for x
    x = 8,496,245,883.84/107,999.20
  6. Step 6: Final answer
    x = 78,669.53

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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.