Home / 137,351.31-189,535.78-76,908.09

Finding the Fourth Proportional to 137,351.31, 189,535.78 and 76,908.09

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Solution

The fourth proportional to 137,351.31, 189,535.78 and 76,908.09 is: 106,128.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,351.31 : 189,535.78 = 76,908.09 : x
  2. Step 2: Convert to fraction form
    137,351.31/189,535.78 = 76,908.09/x
  3. Step 3: Cross multiply
    137,351.31x = 189,535.78 × 76,908.09
  4. Step 4: Simplify right side
    137,351.31x = 14,576,835,633.35
  5. Step 5: Solve for x
    x = 14,576,835,633.35/137,351.31
  6. Step 6: Final answer
    x = 106,128.12

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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.