Home / 142,242.06-196,286.79-78,567.54

Finding the Fourth Proportional to 142,242.06, 196,286.79 and 78,567.54

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Solution

The fourth proportional to 142,242.06, 196,286.79 and 78,567.54 is: 108,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,242.06 : 196,286.79 = 78,567.54 : x
  2. Step 2: Convert to fraction form
    142,242.06/196,286.79 = 78,567.54/x
  3. Step 3: Cross multiply
    142,242.06x = 196,286.79 × 78,567.54
  4. Step 4: Simplify right side
    142,242.06x = 15,421,770,224.80
  5. Step 5: Solve for x
    x = 15,421,770,224.80/142,242.06
  6. Step 6: Final answer
    x = 108,419.20

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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.