Home / 140,639.37-194,081.63-76,108.56

Finding the Fourth Proportional to 140,639.37, 194,081.63 and 76,108.56

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Solution

The fourth proportional to 140,639.37, 194,081.63 and 76,108.56 is: 105,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,639.37 : 194,081.63 = 76,108.56 : x
  2. Step 2: Convert to fraction form
    140,639.37/194,081.63 = 76,108.56/x
  3. Step 3: Cross multiply
    140,639.37x = 194,081.63 × 76,108.56
  4. Step 4: Simplify right side
    140,639.37x = 14,771,273,001.21
  5. Step 5: Solve for x
    x = 14,771,273,001.21/140,639.37
  6. Step 6: Final answer
    x = 105,029.43

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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.