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Finding the Fourth Proportional to 158,367.03, 218,546.13 and 85,769.70

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Solution

The fourth proportional to 158,367.03, 218,546.13 and 85,769.70 is: 118,361.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,367.03 : 218,546.13 = 85,769.70 : x
  2. Step 2: Convert to fraction form
    158,367.03/218,546.13 = 85,769.70/x
  3. Step 3: Cross multiply
    158,367.03x = 218,546.13 × 85,769.70
  4. Step 4: Simplify right side
    158,367.03x = 18,744,634,913.53
  5. Step 5: Solve for x
    x = 18,744,634,913.53/158,367.03
  6. Step 6: Final answer
    x = 118,361.98

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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.