Home / 142,366.03-196,469.22-78,707.92

Finding the Fourth Proportional to 142,366.03, 196,469.22 and 78,707.92

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Solution

The fourth proportional to 142,366.03, 196,469.22 and 78,707.92 is: 108,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,366.03 : 196,469.22 = 78,707.92 : x
  2. Step 2: Convert to fraction form
    142,366.03/196,469.22 = 78,707.92/x
  3. Step 3: Cross multiply
    142,366.03x = 196,469.22 × 78,707.92
  4. Step 4: Simplify right side
    142,366.03x = 15,463,683,747.86
  5. Step 5: Solve for x
    x = 15,463,683,747.86/142,366.03
  6. Step 6: Final answer
    x = 108,619.20

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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.