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Finding the Fourth Proportional to 108,001.80, 161,945.10 and 45,601.80

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Solution

The fourth proportional to 108,001.80, 161,945.10 and 45,601.80 is: 68,378.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,001.80 : 161,945.10 = 45,601.80 : x
  2. Step 2: Convert to fraction form
    108,001.80/161,945.10 = 45,601.80/x
  3. Step 3: Cross multiply
    108,001.80x = 161,945.10 × 45,601.80
  4. Step 4: Simplify right side
    108,001.80x = 7,384,988,061.18
  5. Step 5: Solve for x
    x = 7,384,988,061.18/108,001.80
  6. Step 6: Final answer
    x = 68,378.38

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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.