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Finding the Fourth Proportional to 138,144.61, 207,216.22 and 119,367.51

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Solution

The fourth proportional to 138,144.61, 207,216.22 and 119,367.51 is: 179,050.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,144.61 : 207,216.22 = 119,367.51 : x
  2. Step 2: Convert to fraction form
    138,144.61/207,216.22 = 119,367.51/x
  3. Step 3: Cross multiply
    138,144.61x = 207,216.22 × 119,367.51
  4. Step 4: Simplify right side
    138,144.61x = 24,734,883,616.17
  5. Step 5: Solve for x
    x = 24,734,883,616.17/138,144.61
  6. Step 6: Final answer
    x = 179,050.67

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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.