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Finding the Fourth Proportional to 121,227.98, 167,131.53 and 84,880.54

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Solution

The fourth proportional to 121,227.98, 167,131.53 and 84,880.54 is: 117,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,227.98 : 167,131.53 = 84,880.54 : x
  2. Step 2: Convert to fraction form
    121,227.98/167,131.53 = 84,880.54/x
  3. Step 3: Cross multiply
    121,227.98x = 167,131.53 × 84,880.54
  4. Step 4: Simplify right side
    121,227.98x = 14,186,214,099.60
  5. Step 5: Solve for x
    x = 14,186,214,099.60/121,227.98
  6. Step 6: Final answer
    x = 117,020.95

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1.5x scale

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.