Home / 211,853.18-317,779.65-54,081.57

Finding the Fourth Proportional to 211,853.18, 317,779.65 and 54,081.57

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Solution

The fourth proportional to 211,853.18, 317,779.65 and 54,081.57 is: 81,122.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,853.18 : 317,779.65 = 54,081.57 : x
  2. Step 2: Convert to fraction form
    211,853.18/317,779.65 = 54,081.57/x
  3. Step 3: Cross multiply
    211,853.18x = 317,779.65 × 54,081.57
  4. Step 4: Simplify right side
    211,853.18x = 17,186,022,386.05
  5. Step 5: Solve for x
    x = 17,186,022,386.05/211,853.18
  6. Step 6: Final answer
    x = 81,122.33

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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.