Home / 100,546.77-138,756.21-55,228.94

Finding the Fourth Proportional to 100,546.77, 138,756.21 and 55,228.94

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Solution

The fourth proportional to 100,546.77, 138,756.21 and 55,228.94 is: 76,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,546.77 : 138,756.21 = 55,228.94 : x
  2. Step 2: Convert to fraction form
    100,546.77/138,756.21 = 55,228.94/x
  3. Step 3: Cross multiply
    100,546.77x = 138,756.21 × 55,228.94
  4. Step 4: Simplify right side
    100,546.77x = 7,663,358,396.72
  5. Step 5: Solve for x
    x = 7,663,358,396.72/100,546.77
  6. Step 6: Final answer
    x = 76,216.85

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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.