Home / 154,218.32-212,826.44-87,154.64

Finding the Fourth Proportional to 154,218.32, 212,826.44 and 87,154.64

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Solution

The fourth proportional to 154,218.32, 212,826.44 and 87,154.64 is: 120,276.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,218.32 : 212,826.44 = 87,154.64 : x
  2. Step 2: Convert to fraction form
    154,218.32/212,826.44 = 87,154.64/x
  3. Step 3: Cross multiply
    154,218.32x = 212,826.44 × 87,154.64
  4. Step 4: Simplify right side
    154,218.32x = 18,548,811,760.68
  5. Step 5: Solve for x
    x = 18,548,811,760.68/154,218.32
  6. Step 6: Final answer
    x = 120,276.32

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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.