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Finding the Fourth Proportional to 200,611.60, 276,718.12 and 129,084.56

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Solution

The fourth proportional to 200,611.60, 276,718.12 and 129,084.56 is: 178,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,611.60 : 276,718.12 = 129,084.56 : x
  2. Step 2: Convert to fraction form
    200,611.60/276,718.12 = 129,084.56/x
  3. Step 3: Cross multiply
    200,611.60x = 276,718.12 × 129,084.56
  4. Step 4: Simplify right side
    200,611.60x = 35,720,036,764.23
  5. Step 5: Solve for x
    x = 35,720,036,764.23/200,611.60
  6. Step 6: Final answer
    x = 178,055.69

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1.5x scale

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.