Home / 121,580.49-181,997.04-103,644.36

Finding the Fourth Proportional to 121,580.49, 181,997.04 and 103,644.36

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Solution

The fourth proportional to 121,580.49, 181,997.04 and 103,644.36 is: 155,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,580.49 : 181,997.04 = 103,644.36 : x
  2. Step 2: Convert to fraction form
    121,580.49/181,997.04 = 103,644.36/x
  3. Step 3: Cross multiply
    121,580.49x = 181,997.04 × 103,644.36
  4. Step 4: Simplify right side
    121,580.49x = 18,862,966,732.69
  5. Step 5: Solve for x
    x = 18,862,966,732.69/121,580.49
  6. Step 6: Final answer
    x = 155,147.97

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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.