Home / 189,345.20-284,067.20-71,018.78

Finding the Fourth Proportional to 189,345.20, 284,067.20 and 71,018.78

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Solution

The fourth proportional to 189,345.20, 284,067.20 and 71,018.78 is: 106,546.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,345.20 : 284,067.20 = 71,018.78 : x
  2. Step 2: Convert to fraction form
    189,345.20/284,067.20 = 71,018.78/x
  3. Step 3: Cross multiply
    189,345.20x = 284,067.20 × 71,018.78
  4. Step 4: Simplify right side
    189,345.20x = 20,174,104,739.23
  5. Step 5: Solve for x
    x = 20,174,104,739.23/189,345.20
  6. Step 6: Final answer
    x = 106,546.69

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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.