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Finding the Fourth Proportional to 101,080.85, 139,483.82 and 55,760.54

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Solution

The fourth proportional to 101,080.85, 139,483.82 and 55,760.54 is: 76,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,080.85 : 139,483.82 = 55,760.54 : x
  2. Step 2: Convert to fraction form
    101,080.85/139,483.82 = 55,760.54/x
  3. Step 3: Cross multiply
    101,080.85x = 139,483.82 × 55,760.54
  4. Step 4: Simplify right side
    101,080.85x = 7,777,692,566.45
  5. Step 5: Solve for x
    x = 7,777,692,566.45/101,080.85
  6. Step 6: Final answer
    x = 76,945.27

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1.5x scale

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.