Home / 135,257.58-186,639.32-74,820.03

Finding the Fourth Proportional to 135,257.58, 186,639.32 and 74,820.03

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Solution

The fourth proportional to 135,257.58, 186,639.32 and 74,820.03 is: 103,242.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,257.58 : 186,639.32 = 74,820.03 : x
  2. Step 2: Convert to fraction form
    135,257.58/186,639.32 = 74,820.03/x
  3. Step 3: Cross multiply
    135,257.58x = 186,639.32 × 74,820.03
  4. Step 4: Simplify right side
    135,257.58x = 13,964,359,147.48
  5. Step 5: Solve for x
    x = 13,964,359,147.48/135,257.58
  6. Step 6: Final answer
    x = 103,242.71

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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.