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Finding the Fourth Proportional to 154,021.65, 231,029.24 and 70,915.65

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Solution

The fourth proportional to 154,021.65, 231,029.24 and 70,915.65 is: 106,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,021.65 : 231,029.24 = 70,915.65 : x
  2. Step 2: Convert to fraction form
    154,021.65/231,029.24 = 70,915.65/x
  3. Step 3: Cross multiply
    154,021.65x = 231,029.24 × 70,915.65
  4. Step 4: Simplify right side
    154,021.65x = 16,383,588,369.03
  5. Step 5: Solve for x
    x = 16,383,588,369.03/154,021.65
  6. Step 6: Final answer
    x = 106,371.98

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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.