Home / 142,718.22-196,951.38-78,186.04

Finding the Fourth Proportional to 142,718.22, 196,951.38 and 78,186.04

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Solution

The fourth proportional to 142,718.22, 196,951.38 and 78,186.04 is: 107,896.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,718.22 : 196,951.38 = 78,186.04 : x
  2. Step 2: Convert to fraction form
    142,718.22/196,951.38 = 78,186.04/x
  3. Step 3: Cross multiply
    142,718.22x = 196,951.38 × 78,186.04
  4. Step 4: Simplify right side
    142,718.22x = 15,398,848,474.74
  5. Step 5: Solve for x
    x = 15,398,848,474.74/142,718.22
  6. Step 6: Final answer
    x = 107,896.86

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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.