Home / 142,584.04-196,745.38-78,921.68

Finding the Fourth Proportional to 142,584.04, 196,745.38 and 78,921.68

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Solution

The fourth proportional to 142,584.04, 196,745.38 and 78,921.68 is: 108,900.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,584.04 : 196,745.38 = 78,921.68 : x
  2. Step 2: Convert to fraction form
    142,584.04/196,745.38 = 78,921.68/x
  3. Step 3: Cross multiply
    142,584.04x = 196,745.38 × 78,921.68
  4. Step 4: Simplify right side
    142,584.04x = 15,527,475,921.84
  5. Step 5: Solve for x
    x = 15,527,475,921.84/142,584.04
  6. Step 6: Final answer
    x = 108,900.52

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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.