Home / 142,023.47-195,992.24-78,361.26

Finding the Fourth Proportional to 142,023.47, 195,992.24 and 78,361.26

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Solution

The fourth proportional to 142,023.47, 195,992.24 and 78,361.26 is: 108,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,023.47 : 195,992.24 = 78,361.26 : x
  2. Step 2: Convert to fraction form
    142,023.47/195,992.24 = 78,361.26/x
  3. Step 3: Cross multiply
    142,023.47x = 195,992.24 × 78,361.26
  4. Step 4: Simplify right side
    142,023.47x = 15,358,197,749.85
  5. Step 5: Solve for x
    x = 15,358,197,749.85/142,023.47
  6. Step 6: Final answer
    x = 108,138.45

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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.