Home / 121,182.21-167,174.01-85,391.91

Finding the Fourth Proportional to 121,182.21, 167,174.01 and 85,391.91

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Solution

The fourth proportional to 121,182.21, 167,174.01 and 85,391.91 is: 117,800.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,182.21 : 167,174.01 = 85,391.91 : x
  2. Step 2: Convert to fraction form
    121,182.21/167,174.01 = 85,391.91/x
  3. Step 3: Cross multiply
    121,182.21x = 167,174.01 × 85,391.91
  4. Step 4: Simplify right side
    121,182.21x = 14,275,308,016.26
  5. Step 5: Solve for x
    x = 14,275,308,016.26/121,182.21
  6. Step 6: Final answer
    x = 117,800.36

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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.