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Finding the Fourth Proportional to 210,027.26, 315,042.72 and 67,872.52

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Solution

The fourth proportional to 210,027.26, 315,042.72 and 67,872.52 is: 101,809.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,027.26 : 315,042.72 = 67,872.52 : x
  2. Step 2: Convert to fraction form
    210,027.26/315,042.72 = 67,872.52/x
  3. Step 3: Cross multiply
    210,027.26x = 315,042.72 × 67,872.52
  4. Step 4: Simplify right side
    210,027.26x = 21,382,742,063.00
  5. Step 5: Solve for x
    x = 21,382,742,063.00/210,027.26
  6. Step 6: Final answer
    x = 101,809.37

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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.