Home / 140,708.77-194,178.41-76,178.69

Finding the Fourth Proportional to 140,708.77, 194,178.41 and 76,178.69

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Solution

The fourth proportional to 140,708.77, 194,178.41 and 76,178.69 is: 105,126.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,708.77 : 194,178.41 = 76,178.69 : x
  2. Step 2: Convert to fraction form
    140,708.77/194,178.41 = 76,178.69/x
  3. Step 3: Cross multiply
    140,708.77x = 194,178.41 × 76,178.69
  4. Step 4: Simplify right side
    140,708.77x = 14,792,256,119.64
  5. Step 5: Solve for x
    x = 14,792,256,119.64/140,708.77
  6. Step 6: Final answer
    x = 105,126.75

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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.