Home / 128,536.00-177,564.44-102,660.57

Finding the Fourth Proportional to 128,536.00, 177,564.44 and 102,660.57

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Solution

The fourth proportional to 128,536.00, 177,564.44 and 102,660.57 is: 141,819.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,536.00 : 177,564.44 = 102,660.57 : x
  2. Step 2: Convert to fraction form
    128,536.00/177,564.44 = 102,660.57/x
  3. Step 3: Cross multiply
    128,536.00x = 177,564.44 × 102,660.57
  4. Step 4: Simplify right side
    128,536.00x = 18,228,866,406.65
  5. Step 5: Solve for x
    x = 18,228,866,406.65/128,536.00
  6. Step 6: Final answer
    x = 141,819.16

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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.