Home / 211,920.67-317,880.19-54,148.87

Finding the Fourth Proportional to 211,920.67, 317,880.19 and 54,148.87

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Solution

The fourth proportional to 211,920.67, 317,880.19 and 54,148.87 is: 81,223.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,920.67 : 317,880.19 = 54,148.87 : x
  2. Step 2: Convert to fraction form
    211,920.67/317,880.19 = 54,148.87/x
  3. Step 3: Cross multiply
    211,920.67x = 317,880.19 × 54,148.87
  4. Step 4: Simplify right side
    211,920.67x = 17,212,853,083.89
  5. Step 5: Solve for x
    x = 17,212,853,083.89/211,920.67
  6. Step 6: Final answer
    x = 81,223.10

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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.