Home / 189,621.30-284,380.11-71,283.54

Finding the Fourth Proportional to 189,621.30, 284,380.11 and 71,283.54

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Solution

The fourth proportional to 189,621.30, 284,380.11 and 71,283.54 is: 106,905.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,621.30 : 284,380.11 = 71,283.54 : x
  2. Step 2: Convert to fraction form
    189,621.30/284,380.11 = 71,283.54/x
  3. Step 3: Cross multiply
    189,621.30x = 284,380.11 × 71,283.54
  4. Step 4: Simplify right side
    189,621.30x = 20,271,620,946.39
  5. Step 5: Solve for x
    x = 20,271,620,946.39/189,621.30
  6. Step 6: Final answer
    x = 106,905.82

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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.