Home / 105,249.89-157,768.44-45,317.45

Finding the Fourth Proportional to 105,249.89, 157,768.44 and 45,317.45

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Solution

The fourth proportional to 105,249.89, 157,768.44 and 45,317.45 is: 67,930.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,249.89 : 157,768.44 = 45,317.45 : x
  2. Step 2: Convert to fraction form
    105,249.89/157,768.44 = 45,317.45/x
  3. Step 3: Cross multiply
    105,249.89x = 157,768.44 × 45,317.45
  4. Step 4: Simplify right side
    105,249.89x = 7,149,663,615.76
  5. Step 5: Solve for x
    x = 7,149,663,615.76/105,249.89
  6. Step 6: Final answer
    x = 67,930.37

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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.