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Finding the Fourth Proportional to 128,859.83, 193,243.43 and 44,597.13

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Solution

The fourth proportional to 128,859.83, 193,243.43 and 44,597.13 is: 66,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,859.83 : 193,243.43 = 44,597.13 : x
  2. Step 2: Convert to fraction form
    128,859.83/193,243.43 = 44,597.13/x
  3. Step 3: Cross multiply
    128,859.83x = 193,243.43 × 44,597.13
  4. Step 4: Simplify right side
    128,859.83x = 8,618,102,146.37
  5. Step 5: Solve for x
    x = 8,618,102,146.37/128,859.83
  6. Step 6: Final answer
    x = 66,879.67

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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.