Home / 154,921.11-213,795.37-86,942.24

Finding the Fourth Proportional to 154,921.11, 213,795.37 and 86,942.24

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Solution

The fourth proportional to 154,921.11, 213,795.37 and 86,942.24 is: 119,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,921.11 : 213,795.37 = 86,942.24 : x
  2. Step 2: Convert to fraction form
    154,921.11/213,795.37 = 86,942.24/x
  3. Step 3: Cross multiply
    154,921.11x = 213,795.37 × 86,942.24
  4. Step 4: Simplify right side
    154,921.11x = 18,587,848,369.43
  5. Step 5: Solve for x
    x = 18,587,848,369.43/154,921.11
  6. Step 6: Final answer
    x = 119,982.67

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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.