Home / 214,195.81-321,297.13-81,040.31

Finding the Fourth Proportional to 214,195.81, 321,297.13 and 81,040.31

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Solution

The fourth proportional to 214,195.81, 321,297.13 and 81,040.31 is: 121,561.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,195.81 : 321,297.13 = 81,040.31 : x
  2. Step 2: Convert to fraction form
    214,195.81/321,297.13 = 81,040.31/x
  3. Step 3: Cross multiply
    214,195.81x = 321,297.13 × 81,040.31
  4. Step 4: Simplify right side
    214,195.81x = 26,038,020,068.43
  5. Step 5: Solve for x
    x = 26,038,020,068.43/214,195.81
  6. Step 6: Final answer
    x = 121,561.76

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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.