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Finding the Fourth Proportional to 124,764.48, 171,775.92 and 100,969.92

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Solution

The fourth proportional to 124,764.48, 171,775.92 and 100,969.92 is: 139,015.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,764.48 : 171,775.92 = 100,969.92 : x
  2. Step 2: Convert to fraction form
    124,764.48/171,775.92 = 100,969.92/x
  3. Step 3: Cross multiply
    124,764.48x = 171,775.92 × 100,969.92
  4. Step 4: Simplify right side
    124,764.48x = 17,344,200,900.33
  5. Step 5: Solve for x
    x = 17,344,200,900.33/124,764.48
  6. Step 6: Final answer
    x = 139,015.53

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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.