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Finding the Fourth Proportional to 139,907.52, 209,923.11 and 73,331.73

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Solution

The fourth proportional to 139,907.52, 209,923.11 and 73,331.73 is: 110,030.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,907.52 : 209,923.11 = 73,331.73 : x
  2. Step 2: Convert to fraction form
    139,907.52/209,923.11 = 73,331.73/x
  3. Step 3: Cross multiply
    139,907.52x = 209,923.11 × 73,331.73
  4. Step 4: Simplify right side
    139,907.52x = 15,394,024,823.28
  5. Step 5: Solve for x
    x = 15,394,024,823.28/139,907.52
  6. Step 6: Final answer
    x = 110,030.00

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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.