Home / 158,272.26-218,407.42-86,638.56

Finding the Fourth Proportional to 158,272.26, 218,407.42 and 86,638.56

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Solution

The fourth proportional to 158,272.26, 218,407.42 and 86,638.56 is: 119,556.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,272.26 : 218,407.42 = 86,638.56 : x
  2. Step 2: Convert to fraction form
    158,272.26/218,407.42 = 86,638.56/x
  3. Step 3: Cross multiply
    158,272.26x = 218,407.42 × 86,638.56
  4. Step 4: Simplify right side
    158,272.26x = 18,922,504,362.12
  5. Step 5: Solve for x
    x = 18,922,504,362.12/158,272.26
  6. Step 6: Final answer
    x = 119,556.67

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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.