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Finding the Fourth Proportional to 100,068.60, 150,121.09 and 47,477.60

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Solution

The fourth proportional to 100,068.60, 150,121.09 and 47,477.60 is: 71,225.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,068.60 : 150,121.09 = 47,477.60 : x
  2. Step 2: Convert to fraction form
    100,068.60/150,121.09 = 47,477.60/x
  3. Step 3: Cross multiply
    100,068.60x = 150,121.09 × 47,477.60
  4. Step 4: Simplify right side
    100,068.60x = 7,127,388,311.98
  5. Step 5: Solve for x
    x = 7,127,388,311.98/100,068.60
  6. Step 6: Final answer
    x = 71,225.02

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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.