Home / 138,660.12-207,974.12-38,828.30

Finding the Fourth Proportional to 138,660.12, 207,974.12 and 38,828.30

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Solution

The fourth proportional to 138,660.12, 207,974.12 and 38,828.30 is: 58,237.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,660.12 : 207,974.12 = 38,828.30 : x
  2. Step 2: Convert to fraction form
    138,660.12/207,974.12 = 38,828.30/x
  3. Step 3: Cross multiply
    138,660.12x = 207,974.12 × 38,828.30
  4. Step 4: Simplify right side
    138,660.12x = 8,075,280,289.58
  5. Step 5: Solve for x
    x = 8,075,280,289.58/138,660.12
  6. Step 6: Final answer
    x = 58,237.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.