Home / 100,229.40-138,315.06-54,907.20

Finding the Fourth Proportional to 100,229.40, 138,315.06 and 54,907.20

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Solution

The fourth proportional to 100,229.40, 138,315.06 and 54,907.20 is: 75,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,229.40 : 138,315.06 = 54,907.20 : x
  2. Step 2: Convert to fraction form
    100,229.40/138,315.06 = 54,907.20/x
  3. Step 3: Cross multiply
    100,229.40x = 138,315.06 × 54,907.20
  4. Step 4: Simplify right side
    100,229.40x = 7,594,492,662.43
  5. Step 5: Solve for x
    x = 7,594,492,662.43/100,229.40
  6. Step 6: Final answer
    x = 75,771.11

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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.