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Finding the Fourth Proportional to 121,504.50, 167,676.21 and 71,203.50

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Solution

The fourth proportional to 121,504.50, 167,676.21 and 71,203.50 is: 98,260.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,504.50 : 167,676.21 = 71,203.50 : x
  2. Step 2: Convert to fraction form
    121,504.50/167,676.21 = 71,203.50/x
  3. Step 3: Cross multiply
    121,504.50x = 167,676.21 × 71,203.50
  4. Step 4: Simplify right side
    121,504.50x = 11,939,133,018.74
  5. Step 5: Solve for x
    x = 11,939,133,018.74/121,504.50
  6. Step 6: Final answer
    x = 98,260.83

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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.