Home / 100,119.16-138,158.81-54,797.05

Finding the Fourth Proportional to 100,119.16, 138,158.81 and 54,797.05

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Solution

The fourth proportional to 100,119.16, 138,158.81 and 54,797.05 is: 75,616.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,119.16 : 138,158.81 = 54,797.05 : x
  2. Step 2: Convert to fraction form
    100,119.16/138,158.81 = 54,797.05/x
  3. Step 3: Cross multiply
    100,119.16x = 138,158.81 × 54,797.05
  4. Step 4: Simplify right side
    100,119.16x = 7,570,694,665.71
  5. Step 5: Solve for x
    x = 7,570,694,665.71/100,119.16
  6. Step 6: Final answer
    x = 75,616.85

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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.