Home / 142,616.24-196,812.42-78,954.02

Finding the Fourth Proportional to 142,616.24, 196,812.42 and 78,954.02

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Solution

The fourth proportional to 142,616.24, 196,812.42 and 78,954.02 is: 108,957.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,616.24 : 196,812.42 = 78,954.02 : x
  2. Step 2: Convert to fraction form
    142,616.24/196,812.42 = 78,954.02/x
  3. Step 3: Cross multiply
    142,616.24x = 196,812.42 × 78,954.02
  4. Step 4: Simplify right side
    142,616.24x = 15,539,131,744.93
  5. Step 5: Solve for x
    x = 15,539,131,744.93/142,616.24
  6. Step 6: Final answer
    x = 108,957.66

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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.