Home / 214,780.76-322,171.38-81,629.72

Finding the Fourth Proportional to 214,780.76, 322,171.38 and 81,629.72

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Solution

The fourth proportional to 214,780.76, 322,171.38 and 81,629.72 is: 122,444.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,780.76 : 322,171.38 = 81,629.72 : x
  2. Step 2: Convert to fraction form
    214,780.76/322,171.38 = 81,629.72/x
  3. Step 3: Cross multiply
    214,780.76x = 322,171.38 × 81,629.72
  4. Step 4: Simplify right side
    214,780.76x = 26,298,759,541.41
  5. Step 5: Solve for x
    x = 26,298,759,541.41/214,780.76
  6. Step 6: Final answer
    x = 122,444.67

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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.