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Finding the Fourth Proportional to 100,607.92, 150,770.41 and 79,455.08

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Solution

The fourth proportional to 100,607.92, 150,770.41 and 79,455.08 is: 119,070.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,607.92 : 150,770.41 = 79,455.08 : x
  2. Step 2: Convert to fraction form
    100,607.92/150,770.41 = 79,455.08/x
  3. Step 3: Cross multiply
    100,607.92x = 150,770.41 × 79,455.08
  4. Step 4: Simplify right side
    100,607.92x = 11,979,474,765.32
  5. Step 5: Solve for x
    x = 11,979,474,765.32/100,607.92
  6. Step 6: Final answer
    x = 119,070.89

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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.