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Finding the Fourth Proportional to 173,289.78, 239,040.12 and 104,331.30

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Solution

The fourth proportional to 173,289.78, 239,040.12 and 104,331.30 is: 143,917.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,289.78 : 239,040.12 = 104,331.30 : x
  2. Step 2: Convert to fraction form
    173,289.78/239,040.12 = 104,331.30/x
  3. Step 3: Cross multiply
    173,289.78x = 239,040.12 × 104,331.30
  4. Step 4: Simplify right side
    173,289.78x = 24,939,366,471.76
  5. Step 5: Solve for x
    x = 24,939,366,471.76/173,289.78
  6. Step 6: Final answer
    x = 143,917.12

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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.