Home / 142,236.06-196,278.51-78,561.54

Finding the Fourth Proportional to 142,236.06, 196,278.51 and 78,561.54

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Solution

The fourth proportional to 142,236.06, 196,278.51 and 78,561.54 is: 108,410.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,236.06 : 196,278.51 = 78,561.54 : x
  2. Step 2: Convert to fraction form
    142,236.06/196,278.51 = 78,561.54/x
  3. Step 3: Cross multiply
    142,236.06x = 196,278.51 × 78,561.54
  4. Step 4: Simplify right side
    142,236.06x = 15,419,942,014.51
  5. Step 5: Solve for x
    x = 15,419,942,014.51/142,236.06
  6. Step 6: Final answer
    x = 108,410.92

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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.