Home / 100,331.36-138,458.62-55,009.24

Finding the Fourth Proportional to 100,331.36, 138,458.62 and 55,009.24

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Solution

The fourth proportional to 100,331.36, 138,458.62 and 55,009.24 is: 75,913.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,331.36 : 138,458.62 = 55,009.24 : x
  2. Step 2: Convert to fraction form
    100,331.36/138,458.62 = 55,009.24/x
  3. Step 3: Cross multiply
    100,331.36x = 138,458.62 × 55,009.24
  4. Step 4: Simplify right side
    100,331.36x = 7,616,503,457.65
  5. Step 5: Solve for x
    x = 7,616,503,457.65/100,331.36
  6. Step 6: Final answer
    x = 75,913.49

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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.