Home / 154,898.19-213,759.61-86,905.78

Finding the Fourth Proportional to 154,898.19, 213,759.61 and 86,905.78

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Solution

The fourth proportional to 154,898.19, 213,759.61 and 86,905.78 is: 119,930.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,898.19 : 213,759.61 = 86,905.78 : x
  2. Step 2: Convert to fraction form
    154,898.19/213,759.61 = 86,905.78/x
  3. Step 3: Cross multiply
    154,898.19x = 213,759.61 × 86,905.78
  4. Step 4: Simplify right side
    154,898.19x = 18,576,944,887.88
  5. Step 5: Solve for x
    x = 18,576,944,887.88/154,898.19
  6. Step 6: Final answer
    x = 119,930.03

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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.