Home / 107,910.20-161,646.60-61,108.40

Finding the Fourth Proportional to 107,910.20, 161,646.60 and 61,108.40

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Solution

The fourth proportional to 107,910.20, 161,646.60 and 61,108.40 is: 91,538.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,910.20 : 161,646.60 = 61,108.40 : x
  2. Step 2: Convert to fraction form
    107,910.20/161,646.60 = 61,108.40/x
  3. Step 3: Cross multiply
    107,910.20x = 161,646.60 × 61,108.40
  4. Step 4: Simplify right side
    107,910.20x = 9,877,965,091.44
  5. Step 5: Solve for x
    x = 9,877,965,091.44/107,910.20
  6. Step 6: Final answer
    x = 91,538.75

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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.