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Finding the Fourth Proportional to 154,924.75, 213,796.16 and 87,856.75

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Solution

The fourth proportional to 154,924.75, 213,796.16 and 87,856.75 is: 121,242.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,924.75 : 213,796.16 = 87,856.75 : x
  2. Step 2: Convert to fraction form
    154,924.75/213,796.16 = 87,856.75/x
  3. Step 3: Cross multiply
    154,924.75x = 213,796.16 × 87,856.75
  4. Step 4: Simplify right side
    154,924.75x = 18,783,435,780.08
  5. Step 5: Solve for x
    x = 18,783,435,780.08/154,924.75
  6. Step 6: Final answer
    x = 121,242.32

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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.