Home / 142,627.06-196,825.35-78,100.37

Finding the Fourth Proportional to 142,627.06, 196,825.35 and 78,100.37

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Solution

The fourth proportional to 142,627.06, 196,825.35 and 78,100.37 is: 107,778.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,627.06 : 196,825.35 = 78,100.37 : x
  2. Step 2: Convert to fraction form
    142,627.06/196,825.35 = 78,100.37/x
  3. Step 3: Cross multiply
    142,627.06x = 196,825.35 × 78,100.37
  4. Step 4: Simplify right side
    142,627.06x = 15,372,131,285.75
  5. Step 5: Solve for x
    x = 15,372,131,285.75/142,627.06
  6. Step 6: Final answer
    x = 107,778.51

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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.