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Finding the Fourth Proportional to 139,222.56, 208,833.84 and 34,040.28

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Solution

The fourth proportional to 139,222.56, 208,833.84 and 34,040.28 is: 51,060.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,222.56 : 208,833.84 = 34,040.28 : x
  2. Step 2: Convert to fraction form
    139,222.56/208,833.84 = 34,040.28/x
  3. Step 3: Cross multiply
    139,222.56x = 208,833.84 × 34,040.28
  4. Step 4: Simplify right side
    139,222.56x = 7,108,762,387.08
  5. Step 5: Solve for x
    x = 7,108,762,387.08/139,222.56
  6. Step 6: Final answer
    x = 51,060.42

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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.