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Finding the Fourth Proportional to 140,879.87, 211,208.62 and 69,826.98

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Solution

The fourth proportional to 140,879.87, 211,208.62 and 69,826.98 is: 104,685.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,879.87 : 211,208.62 = 69,826.98 : x
  2. Step 2: Convert to fraction form
    140,879.87/211,208.62 = 69,826.98/x
  3. Step 3: Cross multiply
    140,879.87x = 211,208.62 × 69,826.98
  4. Step 4: Simplify right side
    140,879.87x = 14,748,060,084.57
  5. Step 5: Solve for x
    x = 14,748,060,084.57/140,879.87
  6. Step 6: Final answer
    x = 104,685.36

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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.