Home / 165,865.12-228,897.18-90,413.56

Finding the Fourth Proportional to 165,865.12, 228,897.18 and 90,413.56

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Solution

The fourth proportional to 165,865.12, 228,897.18 and 90,413.56 is: 124,772.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,865.12 : 228,897.18 = 90,413.56 : x
  2. Step 2: Convert to fraction form
    165,865.12/228,897.18 = 90,413.56/x
  3. Step 3: Cross multiply
    165,865.12x = 228,897.18 × 90,413.56
  4. Step 4: Simplify right side
    165,865.12x = 20,695,408,917.76
  5. Step 5: Solve for x
    x = 20,695,408,917.76/165,865.12
  6. Step 6: Final answer
    x = 124,772.52

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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.