Home / 121,732.36-167,991.19-66,542.81

Finding the Fourth Proportional to 121,732.36, 167,991.19 and 66,542.81

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Solution

The fourth proportional to 121,732.36, 167,991.19 and 66,542.81 is: 91,829.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,732.36 : 167,991.19 = 66,542.81 : x
  2. Step 2: Convert to fraction form
    121,732.36/167,991.19 = 66,542.81/x
  3. Step 3: Cross multiply
    121,732.36x = 167,991.19 × 66,542.81
  4. Step 4: Simplify right side
    121,732.36x = 11,178,604,985.00
  5. Step 5: Solve for x
    x = 11,178,604,985.00/121,732.36
  6. Step 6: Final answer
    x = 91,829.36

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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.