Home / 100,333.41-138,459.37-55,010.65

Finding the Fourth Proportional to 100,333.41, 138,459.37 and 55,010.65

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Solution

The fourth proportional to 100,333.41, 138,459.37 and 55,010.65 is: 75,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,333.41 : 138,459.37 = 55,010.65 : x
  2. Step 2: Convert to fraction form
    100,333.41/138,459.37 = 55,010.65/x
  3. Step 3: Cross multiply
    100,333.41x = 138,459.37 × 55,010.65
  4. Step 4: Simplify right side
    100,333.41x = 7,616,738,974.94
  5. Step 5: Solve for x
    x = 7,616,738,974.94/100,333.41
  6. Step 6: Final answer
    x = 75,914.29

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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.