Home / 214,979.10-322,471.80-81,866.72

Finding the Fourth Proportional to 214,979.10, 322,471.80 and 81,866.72

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Solution

The fourth proportional to 214,979.10, 322,471.80 and 81,866.72 is: 122,801.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,979.10 : 322,471.80 = 81,866.72 : x
  2. Step 2: Convert to fraction form
    214,979.10/322,471.80 = 81,866.72/x
  3. Step 3: Cross multiply
    214,979.10x = 322,471.80 × 81,866.72
  4. Step 4: Simplify right side
    214,979.10x = 26,399,708,558.50
  5. Step 5: Solve for x
    x = 26,399,708,558.50/214,979.10
  6. Step 6: Final answer
    x = 122,801.28

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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.