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Finding the Fourth Proportional to 139,285.44, 192,208.56 and 75,621.84

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Solution

The fourth proportional to 139,285.44, 192,208.56 and 75,621.84 is: 104,355.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,285.44 : 192,208.56 = 75,621.84 : x
  2. Step 2: Convert to fraction form
    139,285.44/192,208.56 = 75,621.84/x
  3. Step 3: Cross multiply
    139,285.44x = 192,208.56 × 75,621.84
  4. Step 4: Simplify right side
    139,285.44x = 14,535,164,970.95
  5. Step 5: Solve for x
    x = 14,535,164,970.95/139,285.44
  6. Step 6: Final answer
    x = 104,355.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.