Home / 136,972.09-189,025.52-76,542.87

Finding the Fourth Proportional to 136,972.09, 189,025.52 and 76,542.87

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Solution

The fourth proportional to 136,972.09, 189,025.52 and 76,542.87 is: 105,631.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,972.09 : 189,025.52 = 76,542.87 : x
  2. Step 2: Convert to fraction form
    136,972.09/189,025.52 = 76,542.87/x
  3. Step 3: Cross multiply
    136,972.09x = 189,025.52 × 76,542.87
  4. Step 4: Simplify right side
    136,972.09x = 14,468,556,546.19
  5. Step 5: Solve for x
    x = 14,468,556,546.19/136,972.09
  6. Step 6: Final answer
    x = 105,631.42

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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.