Home / 154,932.75-213,807.20-87,864.75

Finding the Fourth Proportional to 154,932.75, 213,807.20 and 87,864.75

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Solution

The fourth proportional to 154,932.75, 213,807.20 and 87,864.75 is: 121,253.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,932.75 : 213,807.20 = 87,864.75 : x
  2. Step 2: Convert to fraction form
    154,932.75/213,807.20 = 87,864.75/x
  3. Step 3: Cross multiply
    154,932.75x = 213,807.20 × 87,864.75
  4. Step 4: Simplify right side
    154,932.75x = 18,786,115,736.88
  5. Step 5: Solve for x
    x = 18,786,115,736.88/154,932.75
  6. Step 6: Final answer
    x = 121,253.36

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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.