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Finding the Fourth Proportional to 225,987.36, 311,861.70 and 124,014.54

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Solution

The fourth proportional to 225,987.36, 311,861.70 and 124,014.54 is: 171,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,987.36 : 311,861.70 = 124,014.54 : x
  2. Step 2: Convert to fraction form
    225,987.36/311,861.70 = 124,014.54/x
  3. Step 3: Cross multiply
    225,987.36x = 311,861.70 × 124,014.54
  4. Step 4: Simplify right side
    225,987.36x = 38,675,385,269.12
  5. Step 5: Solve for x
    x = 38,675,385,269.12/225,987.36
  6. Step 6: Final answer
    x = 171,139.60

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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.