Home / 212,440.57-318,661.46-86,083.00

Finding the Fourth Proportional to 212,440.57, 318,661.46 and 86,083.00

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Solution

The fourth proportional to 212,440.57, 318,661.46 and 86,083.00 is: 129,124.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,440.57 : 318,661.46 = 86,083.00 : x
  2. Step 2: Convert to fraction form
    212,440.57/318,661.46 = 86,083.00/x
  3. Step 3: Cross multiply
    212,440.57x = 318,661.46 × 86,083.00
  4. Step 4: Simplify right side
    212,440.57x = 27,431,333,556.92
  5. Step 5: Solve for x
    x = 27,431,333,556.92/212,440.57
  6. Step 6: Final answer
    x = 129,124.74

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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.