Home / 172,112,799.53-258,245,438.13-90,212,213.78

Finding the Fourth Proportional to 172,112,799.53, 258,245,438.13 and 90,212,213.78

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Solution

The fourth proportional to 172,112,799.53, 258,245,438.13 and 90,212,213.78 is: 135,358,280.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,112,799.53 : 258,245,438.13 = 90,212,213.78 : x
  2. Step 2: Convert to fraction form
    172,112,799.53/258,245,438.13 = 90,212,213.78/x
  3. Step 3: Cross multiply
    172,112,799.53x = 258,245,438.13 × 90,212,213.78
  4. Step 4: Simplify right side
    172,112,799.53x = 23,296,892,672,293,324
  5. Step 5: Solve for x
    x = 23,296,892,672,293,324/172,112,799.53
  6. Step 6: Final answer
    x = 135,358,280.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.