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Finding the Fourth Proportional to 131,593.88, 181,616.86 and 74,992.28

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Solution

The fourth proportional to 131,593.88, 181,616.86 and 74,992.28 is: 103,499.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,593.88 : 181,616.86 = 74,992.28 : x
  2. Step 2: Convert to fraction form
    131,593.88/181,616.86 = 74,992.28/x
  3. Step 3: Cross multiply
    131,593.88x = 181,616.86 × 74,992.28
  4. Step 4: Simplify right side
    131,593.88x = 13,619,862,417.84
  5. Step 5: Solve for x
    x = 13,619,862,417.84/131,593.88
  6. Step 6: Final answer
    x = 103,499.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.