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Finding the Fourth Proportional to 100,055.40, 138,076.41 and 54,733.37

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Solution

The fourth proportional to 100,055.40, 138,076.41 and 54,733.37 is: 75,532.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,055.40 : 138,076.41 = 54,733.37 : x
  2. Step 2: Convert to fraction form
    100,055.40/138,076.41 = 54,733.37/x
  3. Step 3: Cross multiply
    100,055.40x = 138,076.41 × 54,733.37
  4. Step 4: Simplify right side
    100,055.40x = 7,557,386,950.10
  5. Step 5: Solve for x
    x = 7,557,386,950.10/100,055.40
  6. Step 6: Final answer
    x = 75,532.03

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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.