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Finding the Fourth Proportional to 121,077.56, 167,092.42 and 100,900.68

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Solution

The fourth proportional to 121,077.56, 167,092.42 and 100,900.68 is: 139,247.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,077.56 : 167,092.42 = 100,900.68 : x
  2. Step 2: Convert to fraction form
    121,077.56/167,092.42 = 100,900.68/x
  3. Step 3: Cross multiply
    121,077.56x = 167,092.42 × 100,900.68
  4. Step 4: Simplify right side
    121,077.56x = 16,859,738,800.85
  5. Step 5: Solve for x
    x = 16,859,738,800.85/121,077.56
  6. Step 6: Final answer
    x = 139,247.43

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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.