Home / 136,905.60-188,828.64-86,556

Finding the Fourth Proportional to 136,905.60, 188,828.64 and 86,556

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Solution

The fourth proportional to 136,905.60, 188,828.64 and 86,556 is: 119,383.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,905.60 : 188,828.64 = 86,556 : x
  2. Step 2: Convert to fraction form
    136,905.60/188,828.64 = 86,556/x
  3. Step 3: Cross multiply
    136,905.60x = 188,828.64 × 86,556
  4. Step 4: Simplify right side
    136,905.60x = 16,344,251,763.84
  5. Step 5: Solve for x
    x = 16,344,251,763.84/136,905.60
  6. Step 6: Final answer
    x = 119,383.37

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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.