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Finding the Fourth Proportional to 139,794.89, 209,692.27 and 39,955.12

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Solution

The fourth proportional to 139,794.89, 209,692.27 and 39,955.12 is: 59,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,794.89 : 209,692.27 = 39,955.12 : x
  2. Step 2: Convert to fraction form
    139,794.89/209,692.27 = 39,955.12/x
  3. Step 3: Cross multiply
    139,794.89x = 209,692.27 × 39,955.12
  4. Step 4: Simplify right side
    139,794.89x = 8,378,280,277.36
  5. Step 5: Solve for x
    x = 8,378,280,277.36/139,794.89
  6. Step 6: Final answer
    x = 59,932.66

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1.5x scale

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.