Home / 135,119.75-186,463.22-74,689.05

Finding the Fourth Proportional to 135,119.75, 186,463.22 and 74,689.05

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Solution

The fourth proportional to 135,119.75, 186,463.22 and 74,689.05 is: 103,069.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,119.75 : 186,463.22 = 74,689.05 : x
  2. Step 2: Convert to fraction form
    135,119.75/186,463.22 = 74,689.05/x
  3. Step 3: Cross multiply
    135,119.75x = 186,463.22 × 74,689.05
  4. Step 4: Simplify right side
    135,119.75x = 13,926,760,388.30
  5. Step 5: Solve for x
    x = 13,926,760,388.30/135,119.75
  6. Step 6: Final answer
    x = 103,069.77

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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.