Home / 121,123.75-181,687.25-38,017.75

Finding the Fourth Proportional to 121,123.75, 181,687.25 and 38,017.75

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Solution

The fourth proportional to 121,123.75, 181,687.25 and 38,017.75 is: 57,027.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,123.75 : 181,687.25 = 38,017.75 : x
  2. Step 2: Convert to fraction form
    121,123.75/181,687.25 = 38,017.75/x
  3. Step 3: Cross multiply
    121,123.75x = 181,687.25 × 38,017.75
  4. Step 4: Simplify right side
    121,123.75x = 6,907,340,448.69
  5. Step 5: Solve for x
    x = 6,907,340,448.69/121,123.75
  6. Step 6: Final answer
    x = 57,027.14

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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.