Home / 154,884.39-213,732.86-87,803.43

Finding the Fourth Proportional to 154,884.39, 213,732.86 and 87,803.43

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Solution

The fourth proportional to 154,884.39, 213,732.86 and 87,803.43 is: 121,164.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,884.39 : 213,732.86 = 87,803.43 : x
  2. Step 2: Convert to fraction form
    154,884.39/213,732.86 = 87,803.43/x
  3. Step 3: Cross multiply
    154,884.39x = 213,732.86 × 87,803.43
  4. Step 4: Simplify right side
    154,884.39x = 18,766,477,772.69
  5. Step 5: Solve for x
    x = 18,766,477,772.69/154,884.39
  6. Step 6: Final answer
    x = 121,164.42

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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.