Home / 135,171.34-186,528.92-74,738.36

Finding the Fourth Proportional to 135,171.34, 186,528.92 and 74,738.36

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Solution

The fourth proportional to 135,171.34, 186,528.92 and 74,738.36 is: 103,134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,171.34 : 186,528.92 = 74,738.36 : x
  2. Step 2: Convert to fraction form
    135,171.34/186,528.92 = 74,738.36/x
  3. Step 3: Cross multiply
    135,171.34x = 186,528.92 × 74,738.36
  4. Step 4: Simplify right side
    135,171.34x = 13,940,865,666.00
  5. Step 5: Solve for x
    x = 13,940,865,666.00/135,171.34
  6. Step 6: Final answer
    x = 103,134.78

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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.