Home / 111,939.78-154,421.82-83,167.77

Finding the Fourth Proportional to 111,939.78, 154,421.82 and 83,167.77

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Solution

The fourth proportional to 111,939.78, 154,421.82 and 83,167.77 is: 114,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,939.78 : 154,421.82 = 83,167.77 : x
  2. Step 2: Convert to fraction form
    111,939.78/154,421.82 = 83,167.77/x
  3. Step 3: Cross multiply
    111,939.78x = 154,421.82 × 83,167.77
  4. Step 4: Simplify right side
    111,939.78x = 12,842,918,408.74
  5. Step 5: Solve for x
    x = 12,842,918,408.74/111,939.78
  6. Step 6: Final answer
    x = 114,730.60

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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.