Home / 189,467.40-284,387.94-100,721.64

Finding the Fourth Proportional to 189,467.40, 284,387.94 and 100,721.64

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Solution

The fourth proportional to 189,467.40, 284,387.94 and 100,721.64 is: 151,181.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,467.40 : 284,387.94 = 100,721.64 : x
  2. Step 2: Convert to fraction form
    189,467.40/284,387.94 = 100,721.64/x
  3. Step 3: Cross multiply
    189,467.40x = 284,387.94 × 100,721.64
  4. Step 4: Simplify right side
    189,467.40x = 28,644,019,713.02
  5. Step 5: Solve for x
    x = 28,644,019,713.02/189,467.40
  6. Step 6: Final answer
    x = 151,181.78

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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.