Home / 214,121.40-321,182.10-66,358.20

Finding the Fourth Proportional to 214,121.40, 321,182.10 and 66,358.20

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Solution

The fourth proportional to 214,121.40, 321,182.10 and 66,358.20 is: 99,537.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,121.40 : 321,182.10 = 66,358.20 : x
  2. Step 2: Convert to fraction form
    214,121.40/321,182.10 = 66,358.20/x
  3. Step 3: Cross multiply
    214,121.40x = 321,182.10 × 66,358.20
  4. Step 4: Simplify right side
    214,121.40x = 21,313,066,028.22
  5. Step 5: Solve for x
    x = 21,313,066,028.22/214,121.40
  6. Step 6: Final answer
    x = 99,537.30

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1.5x scale

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.