Home / 165,308.34-228,150.45-100,815

Finding the Fourth Proportional to 165,308.34, 228,150.45 and 100,815

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Solution

The fourth proportional to 165,308.34, 228,150.45 and 100,815 is: 139,139.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,308.34 : 228,150.45 = 100,815 : x
  2. Step 2: Convert to fraction form
    165,308.34/228,150.45 = 100,815/x
  3. Step 3: Cross multiply
    165,308.34x = 228,150.45 × 100,815
  4. Step 4: Simplify right side
    165,308.34x = 23,000,987,616.75
  5. Step 5: Solve for x
    x = 23,000,987,616.75/165,308.34
  6. Step 6: Final answer
    x = 139,139.91

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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.