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Finding the Fourth Proportional to 164,086, 226,438.80 and 88,634.50

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Solution

The fourth proportional to 164,086, 226,438.80 and 88,634.50 is: 122,315.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,086 : 226,438.80 = 88,634.50 : x
  2. Step 2: Convert to fraction form
    164,086/226,438.80 = 88,634.50/x
  3. Step 3: Cross multiply
    164,086x = 226,438.80 × 88,634.50
  4. Step 4: Simplify right side
    164,086x = 20,070,289,818.60
  5. Step 5: Solve for x
    x = 20,070,289,818.60/164,086
  6. Step 6: Final answer
    x = 122,315.67

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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.