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Finding the Fourth Proportional to 121,183.68, 167,199.84 and 78,144.96

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Solution

The fourth proportional to 121,183.68, 167,199.84 and 78,144.96 is: 107,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,183.68 : 167,199.84 = 78,144.96 : x
  2. Step 2: Convert to fraction form
    121,183.68/167,199.84 = 78,144.96/x
  3. Step 3: Cross multiply
    121,183.68x = 167,199.84 × 78,144.96
  4. Step 4: Simplify right side
    121,183.68x = 13,065,824,808.81
  5. Step 5: Solve for x
    x = 13,065,824,808.81/121,183.68
  6. Step 6: Final answer
    x = 107,818.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.