Home / 103,078.20-154,661.31-43,941.72

Finding the Fourth Proportional to 103,078.20, 154,661.31 and 43,941.72

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Solution

The fourth proportional to 103,078.20, 154,661.31 and 43,941.72 is: 65,931.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,078.20 : 154,661.31 = 43,941.72 : x
  2. Step 2: Convert to fraction form
    103,078.20/154,661.31 = 43,941.72/x
  3. Step 3: Cross multiply
    103,078.20x = 154,661.31 × 43,941.72
  4. Step 4: Simplify right side
    103,078.20x = 6,796,083,978.85
  5. Step 5: Solve for x
    x = 6,796,083,978.85/103,078.20
  6. Step 6: Final answer
    x = 65,931.34

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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.