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Finding the Fourth Proportional to 111,885.60, 167,719.05 and 100,075.80

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Solution

The fourth proportional to 111,885.60, 167,719.05 and 100,075.80 is: 150,015.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,885.60 : 167,719.05 = 100,075.80 : x
  2. Step 2: Convert to fraction form
    111,885.60/167,719.05 = 100,075.80/x
  3. Step 3: Cross multiply
    111,885.60x = 167,719.05 × 100,075.80
  4. Step 4: Simplify right side
    111,885.60x = 16,784,618,103.99
  5. Step 5: Solve for x
    x = 16,784,618,103.99/111,885.60
  6. Step 6: Final answer
    x = 150,015.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.