Home / 135,039.20-186,356.04-74,611.23

Finding the Fourth Proportional to 135,039.20, 186,356.04 and 74,611.23

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Solution

The fourth proportional to 135,039.20, 186,356.04 and 74,611.23 is: 102,964.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,039.20 : 186,356.04 = 74,611.23 : x
  2. Step 2: Convert to fraction form
    135,039.20/186,356.04 = 74,611.23/x
  3. Step 3: Cross multiply
    135,039.20x = 186,356.04 × 74,611.23
  4. Step 4: Simplify right side
    135,039.20x = 13,904,253,362.33
  5. Step 5: Solve for x
    x = 13,904,253,362.33/135,039.20
  6. Step 6: Final answer
    x = 102,964.58

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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.