Home / 138,048.43-190,036.70-102,170.83

Finding the Fourth Proportional to 138,048.43, 190,036.70 and 102,170.83

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Solution

The fourth proportional to 138,048.43, 190,036.70 and 102,170.83 is: 140,647.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,048.43 : 190,036.70 = 102,170.83 : x
  2. Step 2: Convert to fraction form
    138,048.43/190,036.70 = 102,170.83/x
  3. Step 3: Cross multiply
    138,048.43x = 190,036.70 × 102,170.83
  4. Step 4: Simplify right side
    138,048.43x = 19,416,206,858.61
  5. Step 5: Solve for x
    x = 19,416,206,858.61/138,048.43
  6. Step 6: Final answer
    x = 140,647.79

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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.