Home / 136,989.45-189,043.97-75,735.38

Finding the Fourth Proportional to 136,989.45, 189,043.97 and 75,735.38

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Solution

The fourth proportional to 136,989.45, 189,043.97 and 75,735.38 is: 104,514.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,989.45 : 189,043.97 = 75,735.38 : x
  2. Step 2: Convert to fraction form
    136,989.45/189,043.97 = 75,735.38/x
  3. Step 3: Cross multiply
    136,989.45x = 189,043.97 × 75,735.38
  4. Step 4: Simplify right side
    136,989.45x = 14,317,316,998.59
  5. Step 5: Solve for x
    x = 14,317,316,998.59/136,989.45
  6. Step 6: Final answer
    x = 104,514.01

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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.