Home / 214,411.56-321,390.36-72,121.38

Finding the Fourth Proportional to 214,411.56, 321,390.36 and 72,121.38

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Solution

The fourth proportional to 214,411.56, 321,390.36 and 72,121.38 is: 108,105.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,411.56 : 321,390.36 = 72,121.38 : x
  2. Step 2: Convert to fraction form
    214,411.56/321,390.36 = 72,121.38/x
  3. Step 3: Cross multiply
    214,411.56x = 321,390.36 × 72,121.38
  4. Step 4: Simplify right side
    214,411.56x = 23,179,116,281.90
  5. Step 5: Solve for x
    x = 23,179,116,281.90/214,411.56
  6. Step 6: Final answer
    x = 108,105.72

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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.