Home / 142,999.46-214,542.24-128,893.31

Finding the Fourth Proportional to 142,999.46, 214,542.24 and 128,893.31

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Solution

The fourth proportional to 142,999.46, 214,542.24 and 128,893.31 is: 193,378.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,999.46 : 214,542.24 = 128,893.31 : x
  2. Step 2: Convert to fraction form
    142,999.46/214,542.24 = 128,893.31/x
  3. Step 3: Cross multiply
    142,999.46x = 214,542.24 × 128,893.31
  4. Step 4: Simplify right side
    142,999.46x = 27,653,058,375.70
  5. Step 5: Solve for x
    x = 27,653,058,375.70/142,999.46
  6. Step 6: Final answer
    x = 193,378.77

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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.