Home / 135,339.33-186,768.69-74,914.17

Finding the Fourth Proportional to 135,339.33, 186,768.69 and 74,914.17

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Solution

The fourth proportional to 135,339.33, 186,768.69 and 74,914.17 is: 103,381.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,339.33 : 186,768.69 = 74,914.17 : x
  2. Step 2: Convert to fraction form
    135,339.33/186,768.69 = 74,914.17/x
  3. Step 3: Cross multiply
    135,339.33x = 186,768.69 × 74,914.17
  4. Step 4: Simplify right side
    135,339.33x = 13,991,621,393.34
  5. Step 5: Solve for x
    x = 13,991,621,393.34/135,339.33
  6. Step 6: Final answer
    x = 103,381.78

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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.