Home / 121,142.40-167,174.82-67,427.43

Finding the Fourth Proportional to 121,142.40, 167,174.82 and 67,427.43

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Solution

The fourth proportional to 121,142.40, 167,174.82 and 67,427.43 is: 93,048.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,142.40 : 167,174.82 = 67,427.43 : x
  2. Step 2: Convert to fraction form
    121,142.40/167,174.82 = 67,427.43/x
  3. Step 3: Cross multiply
    121,142.40x = 167,174.82 × 67,427.43
  4. Step 4: Simplify right side
    121,142.40x = 11,272,168,473.31
  5. Step 5: Solve for x
    x = 11,272,168,473.31/121,142.40
  6. Step 6: Final answer
    x = 93,048.91

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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.