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Finding the Fourth Proportional to 139,540.08, 209,733.03 and 92,316.27

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Solution

The fourth proportional to 139,540.08, 209,733.03 and 92,316.27 is: 138,754.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,540.08 : 209,733.03 = 92,316.27 : x
  2. Step 2: Convert to fraction form
    139,540.08/209,733.03 = 92,316.27/x
  3. Step 3: Cross multiply
    139,540.08x = 209,733.03 × 92,316.27
  4. Step 4: Simplify right side
    139,540.08x = 19,361,771,025.40
  5. Step 5: Solve for x
    x = 19,361,771,025.40/139,540.08
  6. Step 6: Final answer
    x = 138,754.19

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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.