Home / 74,778.15-102,983.88-73,145.19

Finding the Fourth Proportional to 74,778.15, 102,983.88 and 73,145.19

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Solution

The fourth proportional to 74,778.15, 102,983.88 and 73,145.19 is: 100,734.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,778.15 : 102,983.88 = 73,145.19 : x
  2. Step 2: Convert to fraction form
    74,778.15/102,983.88 = 73,145.19/x
  3. Step 3: Cross multiply
    74,778.15x = 102,983.88 × 73,145.19
  4. Step 4: Simplify right side
    74,778.15x = 7,532,775,469.54
  5. Step 5: Solve for x
    x = 7,532,775,469.54/74,778.15
  6. Step 6: Final answer
    x = 100,734.98

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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.