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Finding the Fourth Proportional to 149,803.80, 224,964.90 and 79,819.80

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Solution

The fourth proportional to 149,803.80, 224,964.90 and 79,819.80 is: 119,867.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,803.80 : 224,964.90 = 79,819.80 : x
  2. Step 2: Convert to fraction form
    149,803.80/224,964.90 = 79,819.80/x
  3. Step 3: Cross multiply
    149,803.80x = 224,964.90 × 79,819.80
  4. Step 4: Simplify right side
    149,803.80x = 17,956,653,325.02
  5. Step 5: Solve for x
    x = 17,956,653,325.02/149,803.80
  6. Step 6: Final answer
    x = 119,867.81

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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.