Home / 138,050.43-190,039.45-102,172.83

Finding the Fourth Proportional to 138,050.43, 190,039.45 and 102,172.83

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Solution

The fourth proportional to 138,050.43, 190,039.45 and 102,172.83 is: 140,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,050.43 : 190,039.45 = 102,172.83 : x
  2. Step 2: Convert to fraction form
    138,050.43/190,039.45 = 102,172.83/x
  3. Step 3: Cross multiply
    138,050.43x = 190,039.45 × 102,172.83
  4. Step 4: Simplify right side
    138,050.43x = 19,416,868,418.14
  5. Step 5: Solve for x
    x = 19,416,868,418.14/138,050.43
  6. Step 6: Final answer
    x = 140,650.55

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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.