Home / 211,916.43-317,751.51-85,453.14

Finding the Fourth Proportional to 211,916.43, 317,751.51 and 85,453.14

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Solution

The fourth proportional to 211,916.43, 317,751.51 and 85,453.14 is: 128,130.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,916.43 : 317,751.51 = 85,453.14 : x
  2. Step 2: Convert to fraction form
    211,916.43/317,751.51 = 85,453.14/x
  3. Step 3: Cross multiply
    211,916.43x = 317,751.51 × 85,453.14
  4. Step 4: Simplify right side
    211,916.43x = 27,152,864,269.24
  5. Step 5: Solve for x
    x = 27,152,864,269.24/211,916.43
  6. Step 6: Final answer
    x = 128,130.06

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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.