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Finding the Fourth Proportional to 139,533.66, 209,356.47 and 50,793.30

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Solution

The fourth proportional to 139,533.66, 209,356.47 and 50,793.30 is: 76,210.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,533.66 : 209,356.47 = 50,793.30 : x
  2. Step 2: Convert to fraction form
    139,533.66/209,356.47 = 50,793.30/x
  3. Step 3: Cross multiply
    139,533.66x = 209,356.47 × 50,793.30
  4. Step 4: Simplify right side
    139,533.66x = 10,633,905,987.65
  5. Step 5: Solve for x
    x = 10,633,905,987.65/139,533.66
  6. Step 6: Final answer
    x = 76,210.33

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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.