Home / 136,721.90-188,626.39-85,035.60

Finding the Fourth Proportional to 136,721.90, 188,626.39 and 85,035.60

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Solution

The fourth proportional to 136,721.90, 188,626.39 and 85,035.60 is: 117,318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,721.90 : 188,626.39 = 85,035.60 : x
  2. Step 2: Convert to fraction form
    136,721.90/188,626.39 = 85,035.60/x
  3. Step 3: Cross multiply
    136,721.90x = 188,626.39 × 85,035.60
  4. Step 4: Simplify right side
    136,721.90x = 16,039,958,036.90
  5. Step 5: Solve for x
    x = 16,039,958,036.90/136,721.90
  6. Step 6: Final answer
    x = 117,318.13

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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.