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Finding the Fourth Proportional to 189,079.80, 283,619.70 and 100,287.60

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Solution

The fourth proportional to 189,079.80, 283,619.70 and 100,287.60 is: 150,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,079.80 : 283,619.70 = 100,287.60 : x
  2. Step 2: Convert to fraction form
    189,079.80/283,619.70 = 100,287.60/x
  3. Step 3: Cross multiply
    189,079.80x = 283,619.70 × 100,287.60
  4. Step 4: Simplify right side
    189,079.80x = 28,443,539,025.72
  5. Step 5: Solve for x
    x = 28,443,539,025.72/189,079.80
  6. Step 6: Final answer
    x = 150,431.40

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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.