Home / 142,669.63-196,890.28-79,007.43

Finding the Fourth Proportional to 142,669.63, 196,890.28 and 79,007.43

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Solution

The fourth proportional to 142,669.63, 196,890.28 and 79,007.43 is: 109,033.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,669.63 : 196,890.28 = 79,007.43 : x
  2. Step 2: Convert to fraction form
    142,669.63/196,890.28 = 79,007.43/x
  3. Step 3: Cross multiply
    142,669.63x = 196,890.28 × 79,007.43
  4. Step 4: Simplify right side
    142,669.63x = 15,555,795,723.58
  5. Step 5: Solve for x
    x = 15,555,795,723.58/142,669.63
  6. Step 6: Final answer
    x = 109,033.68

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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.