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Finding the Fourth Proportional to 100,804.70, 151,207.05 and 34,319.90

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Solution

The fourth proportional to 100,804.70, 151,207.05 and 34,319.90 is: 51,479.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,804.70 : 151,207.05 = 34,319.90 : x
  2. Step 2: Convert to fraction form
    100,804.70/151,207.05 = 34,319.90/x
  3. Step 3: Cross multiply
    100,804.70x = 151,207.05 × 34,319.90
  4. Step 4: Simplify right side
    100,804.70x = 5,189,410,835.30
  5. Step 5: Solve for x
    x = 5,189,410,835.30/100,804.70
  6. Step 6: Final answer
    x = 51,479.85

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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.