Home / 111,978.03-154,529.66-61,677.03

Finding the Fourth Proportional to 111,978.03, 154,529.66 and 61,677.03

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Solution

The fourth proportional to 111,978.03, 154,529.66 and 61,677.03 is: 85,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,978.03 : 154,529.66 = 61,677.03 : x
  2. Step 2: Convert to fraction form
    111,978.03/154,529.66 = 61,677.03/x
  3. Step 3: Cross multiply
    111,978.03x = 154,529.66 × 61,677.03
  4. Step 4: Simplify right side
    111,978.03x = 9,530,930,167.32
  5. Step 5: Solve for x
    x = 9,530,930,167.32/111,978.03
  6. Step 6: Final answer
    x = 85,114.29

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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.