Home / 80,123.69-111,076.36-75,857.63

Finding the Fourth Proportional to 80,123.69, 111,076.36 and 75,857.63

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Solution

The fourth proportional to 80,123.69, 111,076.36 and 75,857.63 is: 105,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,123.69 : 111,076.36 = 75,857.63 : x
  2. Step 2: Convert to fraction form
    80,123.69/111,076.36 = 75,857.63/x
  3. Step 3: Cross multiply
    80,123.69x = 111,076.36 × 75,857.63
  4. Step 4: Simplify right side
    80,123.69x = 8,425,989,418.63
  5. Step 5: Solve for x
    x = 8,425,989,418.63/80,123.69
  6. Step 6: Final answer
    x = 105,162.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.