Home / 120,108.44-165,756.03-69,128.93

Finding the Fourth Proportional to 120,108.44, 165,756.03 and 69,128.93

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Solution

The fourth proportional to 120,108.44, 165,756.03 and 69,128.93 is: 95,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,108.44 : 165,756.03 = 69,128.93 : x
  2. Step 2: Convert to fraction form
    120,108.44/165,756.03 = 69,128.93/x
  3. Step 3: Cross multiply
    120,108.44x = 165,756.03 × 69,128.93
  4. Step 4: Simplify right side
    120,108.44x = 11,458,536,994.95
  5. Step 5: Solve for x
    x = 11,458,536,994.95/120,108.44
  6. Step 6: Final answer
    x = 95,401.60

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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.