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Finding the Fourth Proportional to 139,394.88, 209,100.12 and 44,633.40

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Solution

The fourth proportional to 139,394.88, 209,100.12 and 44,633.40 is: 66,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,394.88 : 209,100.12 = 44,633.40 : x
  2. Step 2: Convert to fraction form
    139,394.88/209,100.12 = 44,633.40/x
  3. Step 3: Cross multiply
    139,394.88x = 209,100.12 × 44,633.40
  4. Step 4: Simplify right side
    139,394.88x = 9,332,849,296.01
  5. Step 5: Solve for x
    x = 9,332,849,296.01/139,394.88
  6. Step 6: Final answer
    x = 66,952.60

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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.