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Finding the Fourth Proportional to 121,502.04, 167,672.94 and 71,201

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Solution

The fourth proportional to 121,502.04, 167,672.94 and 71,201 is: 98,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,502.04 : 167,672.94 = 71,201 : x
  2. Step 2: Convert to fraction form
    121,502.04/167,672.94 = 71,201/x
  3. Step 3: Cross multiply
    121,502.04x = 167,672.94 × 71,201
  4. Step 4: Simplify right side
    121,502.04x = 11,938,481,000.94
  5. Step 5: Solve for x
    x = 11,938,481,000.94/121,502.04
  6. Step 6: Final answer
    x = 98,257.45

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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.