Home / 135,323.10-186,719.31-77,171.58

Finding the Fourth Proportional to 135,323.10, 186,719.31 and 77,171.58

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Solution

The fourth proportional to 135,323.10, 186,719.31 and 77,171.58 is: 106,481.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,323.10 : 186,719.31 = 77,171.58 : x
  2. Step 2: Convert to fraction form
    135,323.10/186,719.31 = 77,171.58/x
  3. Step 3: Cross multiply
    135,323.10x = 186,719.31 × 77,171.58
  4. Step 4: Simplify right side
    135,323.10x = 14,409,424,169.21
  5. Step 5: Solve for x
    x = 14,409,424,169.21/135,323.10
  6. Step 6: Final answer
    x = 106,481.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.