Home / 142,235.56-196,277.82-78,561.04

Finding the Fourth Proportional to 142,235.56, 196,277.82 and 78,561.04

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Solution

The fourth proportional to 142,235.56, 196,277.82 and 78,561.04 is: 108,410.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,235.56 : 196,277.82 = 78,561.04 : x
  2. Step 2: Convert to fraction form
    142,235.56/196,277.82 = 78,561.04/x
  3. Step 3: Cross multiply
    142,235.56x = 196,277.82 × 78,561.04
  4. Step 4: Simplify right side
    142,235.56x = 15,419,789,668.13
  5. Step 5: Solve for x
    x = 15,419,789,668.13/142,235.56
  6. Step 6: Final answer
    x = 108,410.23

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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.