Home / 108,485.20-162,753.78-45,270.15

Finding the Fourth Proportional to 108,485.20, 162,753.78 and 45,270.15

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Solution

The fourth proportional to 108,485.20, 162,753.78 and 45,270.15 is: 67,916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,485.20 : 162,753.78 = 45,270.15 : x
  2. Step 2: Convert to fraction form
    108,485.20/162,753.78 = 45,270.15/x
  3. Step 3: Cross multiply
    108,485.20x = 162,753.78 × 45,270.15
  4. Step 4: Simplify right side
    108,485.20x = 7,367,888,610.14
  5. Step 5: Solve for x
    x = 7,367,888,610.14/108,485.20
  6. Step 6: Final answer
    x = 67,916.07

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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.