Home / 121,261.09-181,911.89-54,699.75

Finding the Fourth Proportional to 121,261.09, 181,911.89 and 54,699.75

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Solution

The fourth proportional to 121,261.09, 181,911.89 and 54,699.75 is: 82,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,261.09 : 181,911.89 = 54,699.75 : x
  2. Step 2: Convert to fraction form
    121,261.09/181,911.89 = 54,699.75/x
  3. Step 3: Cross multiply
    121,261.09x = 181,911.89 × 54,699.75
  4. Step 4: Simplify right side
    121,261.09x = 9,950,534,905.03
  5. Step 5: Solve for x
    x = 9,950,534,905.03/121,261.09
  6. Step 6: Final answer
    x = 82,058.76

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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.