Home / 142,305.30-196,342.92-81,893.07

Finding the Fourth Proportional to 142,305.30, 196,342.92 and 81,893.07

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Solution

The fourth proportional to 142,305.30, 196,342.92 and 81,893.07 is: 112,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,305.30 : 196,342.92 = 81,893.07 : x
  2. Step 2: Convert to fraction form
    142,305.30/196,342.92 = 81,893.07/x
  3. Step 3: Cross multiply
    142,305.30x = 196,342.92 × 81,893.07
  4. Step 4: Simplify right side
    142,305.30x = 16,079,124,491.56
  5. Step 5: Solve for x
    x = 16,079,124,491.56/142,305.30
  6. Step 6: Final answer
    x = 112,990.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.