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Finding the Fourth Proportional to 139,540.56, 209,309.04 and 34,360.44

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Solution

The fourth proportional to 139,540.56, 209,309.04 and 34,360.44 is: 51,540.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,540.56 : 209,309.04 = 34,360.44 : x
  2. Step 2: Convert to fraction form
    139,540.56/209,309.04 = 34,360.44/x
  3. Step 3: Cross multiply
    139,540.56x = 209,309.04 × 34,360.44
  4. Step 4: Simplify right side
    139,540.56x = 7,191,950,710.38
  5. Step 5: Solve for x
    x = 7,191,950,710.38/139,540.56
  6. Step 6: Final answer
    x = 51,540.22

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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.