Home / 107,921.20-149,129.28-102,735.94

Finding the Fourth Proportional to 107,921.20, 149,129.28 and 102,735.94

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Solution

The fourth proportional to 107,921.20, 149,129.28 and 102,735.94 is: 141,964.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,921.20 : 149,129.28 = 102,735.94 : x
  2. Step 2: Convert to fraction form
    107,921.20/149,129.28 = 102,735.94/x
  3. Step 3: Cross multiply
    107,921.20x = 149,129.28 × 102,735.94
  4. Step 4: Simplify right side
    107,921.20x = 15,320,936,762.32
  5. Step 5: Solve for x
    x = 15,320,936,762.32/107,921.20
  6. Step 6: Final answer
    x = 141,964.11

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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.