Home / 211,720.26-317,165.19-122,787

Finding the Fourth Proportional to 211,720.26, 317,165.19 and 122,787

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Solution

The fourth proportional to 211,720.26, 317,165.19 and 122,787 is: 183,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,720.26 : 317,165.19 = 122,787 : x
  2. Step 2: Convert to fraction form
    211,720.26/317,165.19 = 122,787/x
  3. Step 3: Cross multiply
    211,720.26x = 317,165.19 × 122,787
  4. Step 4: Simplify right side
    211,720.26x = 38,943,762,184.53
  5. Step 5: Solve for x
    x = 38,943,762,184.53/211,720.26
  6. Step 6: Final answer
    x = 183,939.71

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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.