Home / 214,163.10-321,123.15-81,047.70

Finding the Fourth Proportional to 214,163.10, 321,123.15 and 81,047.70

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Solution

The fourth proportional to 214,163.10, 321,123.15 and 81,047.70 is: 121,525.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,163.10 : 321,123.15 = 81,047.70 : x
  2. Step 2: Convert to fraction form
    214,163.10/321,123.15 = 81,047.70/x
  3. Step 3: Cross multiply
    214,163.10x = 321,123.15 × 81,047.70
  4. Step 4: Simplify right side
    214,163.10x = 26,026,292,724.26
  5. Step 5: Solve for x
    x = 26,026,292,724.26/214,163.10
  6. Step 6: Final answer
    x = 121,525.57

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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.