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Finding the Fourth Proportional to 139,620.33, 209,517.98 and 56,514.33

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Solution

The fourth proportional to 139,620.33, 209,517.98 and 56,514.33 is: 84,806.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,620.33 : 209,517.98 = 56,514.33 : x
  2. Step 2: Convert to fraction form
    139,620.33/209,517.98 = 56,514.33/x
  3. Step 3: Cross multiply
    139,620.33x = 209,517.98 × 56,514.33
  4. Step 4: Simplify right side
    139,620.33x = 11,840,767,980.08
  5. Step 5: Solve for x
    x = 11,840,767,980.08/139,620.33
  6. Step 6: Final answer
    x = 84,806.90

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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.