Home / 221,556.76-332,341.97-86,615.45

Finding the Fourth Proportional to 221,556.76, 332,341.97 and 86,615.45

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Solution

The fourth proportional to 221,556.76, 332,341.97 and 86,615.45 is: 129,925.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,556.76 : 332,341.97 = 86,615.45 : x
  2. Step 2: Convert to fraction form
    221,556.76/332,341.97 = 86,615.45/x
  3. Step 3: Cross multiply
    221,556.76x = 332,341.97 × 86,615.45
  4. Step 4: Simplify right side
    221,556.76x = 28,785,947,840.27
  5. Step 5: Solve for x
    x = 28,785,947,840.27/221,556.76
  6. Step 6: Final answer
    x = 129,925.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.