Home / 140,738.72-194,218-76,207.64

Finding the Fourth Proportional to 140,738.72, 194,218 and 76,207.64

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Solution

The fourth proportional to 140,738.72, 194,218 and 76,207.64 is: 105,165.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,738.72 : 194,218 = 76,207.64 : x
  2. Step 2: Convert to fraction form
    140,738.72/194,218 = 76,207.64/x
  3. Step 3: Cross multiply
    140,738.72x = 194,218 × 76,207.64
  4. Step 4: Simplify right side
    140,738.72x = 14,800,895,425.52
  5. Step 5: Solve for x
    x = 14,800,895,425.52/140,738.72
  6. Step 6: Final answer
    x = 105,165.77

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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.