Home / 142,223.56-196,267.92-78,561.36

Finding the Fourth Proportional to 142,223.56, 196,267.92 and 78,561.36

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Solution

The fourth proportional to 142,223.56, 196,267.92 and 78,561.36 is: 108,414.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,223.56 : 196,267.92 = 78,561.36 : x
  2. Step 2: Convert to fraction form
    142,223.56/196,267.92 = 78,561.36/x
  3. Step 3: Cross multiply
    142,223.56x = 196,267.92 × 78,561.36
  4. Step 4: Simplify right side
    142,223.56x = 15,419,074,424.97
  5. Step 5: Solve for x
    x = 15,419,074,424.97/142,223.56
  6. Step 6: Final answer
    x = 108,414.34

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1.5x scale

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.