Home / 142,738.43-196,964.66-79,064.33

Finding the Fourth Proportional to 142,738.43, 196,964.66 and 79,064.33

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Solution

The fourth proportional to 142,738.43, 196,964.66 and 79,064.33 is: 109,100.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,738.43 : 196,964.66 = 79,064.33 : x
  2. Step 2: Convert to fraction form
    142,738.43/196,964.66 = 79,064.33/x
  3. Step 3: Cross multiply
    142,738.43x = 196,964.66 × 79,064.33
  4. Step 4: Simplify right side
    142,738.43x = 15,572,878,876.58
  5. Step 5: Solve for x
    x = 15,572,878,876.58/142,738.43
  6. Step 6: Final answer
    x = 109,100.81

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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.