Home / 108,693.05-162,919.88-81,953.30

Finding the Fourth Proportional to 108,693.05, 162,919.88 and 81,953.30

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Solution

The fourth proportional to 108,693.05, 162,919.88 and 81,953.30 is: 122,839.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,693.05 : 162,919.88 = 81,953.30 : x
  2. Step 2: Convert to fraction form
    108,693.05/162,919.88 = 81,953.30/x
  3. Step 3: Cross multiply
    108,693.05x = 162,919.88 × 81,953.30
  4. Step 4: Simplify right side
    108,693.05x = 13,351,822,130.22
  5. Step 5: Solve for x
    x = 13,351,822,130.22/108,693.05
  6. Step 6: Final answer
    x = 122,839.71

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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.