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Finding the Fourth Proportional to 121,457.25, 167,625.63 and 71,156.25

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Solution

The fourth proportional to 121,457.25, 167,625.63 and 71,156.25 is: 98,204.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,457.25 : 167,625.63 = 71,156.25 : x
  2. Step 2: Convert to fraction form
    121,457.25/167,625.63 = 71,156.25/x
  3. Step 3: Cross multiply
    121,457.25x = 167,625.63 × 71,156.25
  4. Step 4: Simplify right side
    121,457.25x = 11,927,611,234.69
  5. Step 5: Solve for x
    x = 11,927,611,234.69/121,457.25
  6. Step 6: Final answer
    x = 98,204.19

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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.