Home / 189,740.40-284,380.20-84,447.60

Finding the Fourth Proportional to 189,740.40, 284,380.20 and 84,447.60

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Solution

The fourth proportional to 189,740.40, 284,380.20 and 84,447.60 is: 126,568.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,740.40 : 284,380.20 = 84,447.60 : x
  2. Step 2: Convert to fraction form
    189,740.40/284,380.20 = 84,447.60/x
  3. Step 3: Cross multiply
    189,740.40x = 284,380.20 × 84,447.60
  4. Step 4: Simplify right side
    189,740.40x = 24,015,225,377.52
  5. Step 5: Solve for x
    x = 24,015,225,377.52/189,740.40
  6. Step 6: Final answer
    x = 126,568.86

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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.