Home / 171,431.14-256,977.19-81,315.81

Finding the Fourth Proportional to 171,431.14, 256,977.19 and 81,315.81

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Solution

The fourth proportional to 171,431.14, 256,977.19 and 81,315.81 is: 121,893.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,431.14 : 256,977.19 = 81,315.81 : x
  2. Step 2: Convert to fraction form
    171,431.14/256,977.19 = 81,315.81/x
  3. Step 3: Cross multiply
    171,431.14x = 256,977.19 × 81,315.81
  4. Step 4: Simplify right side
    171,431.14x = 20,896,308,356.37
  5. Step 5: Solve for x
    x = 20,896,308,356.37/171,431.14
  6. Step 6: Final answer
    x = 121,893.31

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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.