Home / 212,080.09-318,111.83-71,838.71

Finding the Fourth Proportional to 212,080.09, 318,111.83 and 71,838.71

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Solution

The fourth proportional to 212,080.09, 318,111.83 and 71,838.71 is: 107,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,080.09 : 318,111.83 = 71,838.71 : x
  2. Step 2: Convert to fraction form
    212,080.09/318,111.83 = 71,838.71/x
  3. Step 3: Cross multiply
    212,080.09x = 318,111.83 × 71,838.71
  4. Step 4: Simplify right side
    212,080.09x = 22,852,743,143.75
  5. Step 5: Solve for x
    x = 22,852,743,143.75/212,080.09
  6. Step 6: Final answer
    x = 107,755.25

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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.