Home / 142,629.98-196,842.58-78,967.78

Finding the Fourth Proportional to 142,629.98, 196,842.58 and 78,967.78

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Solution

The fourth proportional to 142,629.98, 196,842.58 and 78,967.78 is: 108,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,629.98 : 196,842.58 = 78,967.78 : x
  2. Step 2: Convert to fraction form
    142,629.98/196,842.58 = 78,967.78/x
  3. Step 3: Cross multiply
    142,629.98x = 196,842.58 × 78,967.78
  4. Step 4: Simplify right side
    142,629.98x = 15,544,221,896.84
  5. Step 5: Solve for x
    x = 15,544,221,896.84/142,629.98
  6. Step 6: Final answer
    x = 108,982.85

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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.