Home / 154,215.20-231,322.80-69,942.80

Finding the Fourth Proportional to 154,215.20, 231,322.80 and 69,942.80

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Solution

The fourth proportional to 154,215.20, 231,322.80 and 69,942.80 is: 104,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,215.20 : 231,322.80 = 69,942.80 : x
  2. Step 2: Convert to fraction form
    154,215.20/231,322.80 = 69,942.80/x
  3. Step 3: Cross multiply
    154,215.20x = 231,322.80 × 69,942.80
  4. Step 4: Simplify right side
    154,215.20x = 16,179,364,335.84
  5. Step 5: Solve for x
    x = 16,179,364,335.84/154,215.20
  6. Step 6: Final answer
    x = 104,914.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.