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Finding the Fourth Proportional to 154,926, 213,797.88 and 87,858

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Solution

The fourth proportional to 154,926, 213,797.88 and 87,858 is: 121,244.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,926 : 213,797.88 = 87,858 : x
  2. Step 2: Convert to fraction form
    154,926/213,797.88 = 87,858/x
  3. Step 3: Cross multiply
    154,926x = 213,797.88 × 87,858
  4. Step 4: Simplify right side
    154,926x = 18,783,854,141.04
  5. Step 5: Solve for x
    x = 18,783,854,141.04/154,926
  6. Step 6: Final answer
    x = 121,244.04

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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.