Home / 100,150.14-138,206.97-54,827.75

Finding the Fourth Proportional to 100,150.14, 138,206.97 and 54,827.75

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Solution

The fourth proportional to 100,150.14, 138,206.97 and 54,827.75 is: 75,662.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,150.14 : 138,206.97 = 54,827.75 : x
  2. Step 2: Convert to fraction form
    100,150.14/138,206.97 = 54,827.75/x
  3. Step 3: Cross multiply
    100,150.14x = 138,206.97 × 54,827.75
  4. Step 4: Simplify right side
    100,150.14x = 7,577,577,199.42
  5. Step 5: Solve for x
    x = 7,577,577,199.42/100,150.14
  6. Step 6: Final answer
    x = 75,662.18

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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.