Home / 100,329.36-138,455.86-55,007.23

Finding the Fourth Proportional to 100,329.36, 138,455.86 and 55,007.23

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Solution

The fourth proportional to 100,329.36, 138,455.86 and 55,007.23 is: 75,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,329.36 : 138,455.86 = 55,007.23 : x
  2. Step 2: Convert to fraction form
    100,329.36/138,455.86 = 55,007.23/x
  3. Step 3: Cross multiply
    100,329.36x = 138,455.86 × 55,007.23
  4. Step 4: Simplify right side
    100,329.36x = 7,616,073,335.87
  5. Step 5: Solve for x
    x = 7,616,073,335.87/100,329.36
  6. Step 6: Final answer
    x = 75,910.72

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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.