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Finding the Fourth Proportional to 139,370.40, 208,991.70 and 44,582.13

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Solution

The fourth proportional to 139,370.40, 208,991.70 and 44,582.13 is: 66,852.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,370.40 : 208,991.70 = 44,582.13 : x
  2. Step 2: Convert to fraction form
    139,370.40/208,991.70 = 44,582.13/x
  3. Step 3: Cross multiply
    139,370.40x = 208,991.70 × 44,582.13
  4. Step 4: Simplify right side
    139,370.40x = 9,317,295,138.32
  5. Step 5: Solve for x
    x = 9,317,295,138.32/139,370.40
  6. Step 6: Final answer
    x = 66,852.75

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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.