Home / 211,036.41-316,520.42-77,979.33

Finding the Fourth Proportional to 211,036.41, 316,520.42 and 77,979.33

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Solution

The fourth proportional to 211,036.41, 316,520.42 and 77,979.33 is: 116,956.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,036.41 : 316,520.42 = 77,979.33 : x
  2. Step 2: Convert to fraction form
    211,036.41/316,520.42 = 77,979.33/x
  3. Step 3: Cross multiply
    211,036.41x = 316,520.42 × 77,979.33
  4. Step 4: Simplify right side
    211,036.41x = 24,682,049,893.02
  5. Step 5: Solve for x
    x = 24,682,049,893.02/211,036.41
  6. Step 6: Final answer
    x = 116,956.36

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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.