Home / 135,046.80-186,368.35-74,621.36

Finding the Fourth Proportional to 135,046.80, 186,368.35 and 74,621.36

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Solution

The fourth proportional to 135,046.80, 186,368.35 and 74,621.36 is: 102,979.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,046.80 : 186,368.35 = 74,621.36 : x
  2. Step 2: Convert to fraction form
    135,046.80/186,368.35 = 74,621.36/x
  3. Step 3: Cross multiply
    135,046.80x = 186,368.35 × 74,621.36
  4. Step 4: Simplify right side
    135,046.80x = 13,907,059,737.96
  5. Step 5: Solve for x
    x = 13,907,059,737.96/135,046.80
  6. Step 6: Final answer
    x = 102,979.56

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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.