Home / 140,190.24-210,285.32-77,409.54

Finding the Fourth Proportional to 140,190.24, 210,285.32 and 77,409.54

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Solution

The fourth proportional to 140,190.24, 210,285.32 and 77,409.54 is: 116,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,190.24 : 210,285.32 = 77,409.54 : x
  2. Step 2: Convert to fraction form
    140,190.24/210,285.32 = 77,409.54/x
  3. Step 3: Cross multiply
    140,190.24x = 210,285.32 × 77,409.54
  4. Step 4: Simplify right side
    140,190.24x = 16,278,089,889.95
  5. Step 5: Solve for x
    x = 16,278,089,889.95/140,190.24
  6. Step 6: Final answer
    x = 116,114.29

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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.