Home / 189,864.72-284,272.12-142,975.44

Finding the Fourth Proportional to 189,864.72, 284,272.12 and 142,975.44

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Solution

The fourth proportional to 189,864.72, 284,272.12 and 142,975.44 is: 214,067.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,864.72 : 284,272.12 = 142,975.44 : x
  2. Step 2: Convert to fraction form
    189,864.72/284,272.12 = 142,975.44/x
  3. Step 3: Cross multiply
    189,864.72x = 284,272.12 × 142,975.44
  4. Step 4: Simplify right side
    189,864.72x = 40,643,931,436.73
  5. Step 5: Solve for x
    x = 40,643,931,436.73/189,864.72
  6. Step 6: Final answer
    x = 214,067.84

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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.