Home / 143,676.06-198,258.75-80,019.78

Finding the Fourth Proportional to 143,676.06, 198,258.75 and 80,019.78

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Solution

The fourth proportional to 143,676.06, 198,258.75 and 80,019.78 is: 110,419.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,676.06 : 198,258.75 = 80,019.78 : x
  2. Step 2: Convert to fraction form
    143,676.06/198,258.75 = 80,019.78/x
  3. Step 3: Cross multiply
    143,676.06x = 198,258.75 × 80,019.78
  4. Step 4: Simplify right side
    143,676.06x = 15,864,621,558.08
  5. Step 5: Solve for x
    x = 15,864,621,558.08/143,676.06
  6. Step 6: Final answer
    x = 110,419.38

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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.