Home / 135,177.15-186,540.77-74,745.79

Finding the Fourth Proportional to 135,177.15, 186,540.77 and 74,745.79

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Solution

The fourth proportional to 135,177.15, 186,540.77 and 74,745.79 is: 103,147.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,177.15 : 186,540.77 = 74,745.79 : x
  2. Step 2: Convert to fraction form
    135,177.15/186,540.77 = 74,745.79/x
  3. Step 3: Cross multiply
    135,177.15x = 186,540.77 × 74,745.79
  4. Step 4: Simplify right side
    135,177.15x = 13,943,136,941.37
  5. Step 5: Solve for x
    x = 13,943,136,941.37/135,177.15
  6. Step 6: Final answer
    x = 103,147.14

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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.