Home / 254,611.35-381,691.04-128,086.11

Finding the Fourth Proportional to 254,611.35, 381,691.04 and 128,086.11

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Solution

The fourth proportional to 254,611.35, 381,691.04 and 128,086.11 is: 192,015.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,611.35 : 381,691.04 = 128,086.11 : x
  2. Step 2: Convert to fraction form
    254,611.35/381,691.04 = 128,086.11/x
  3. Step 3: Cross multiply
    254,611.35x = 381,691.04 × 128,086.11
  4. Step 4: Simplify right side
    254,611.35x = 48,889,319,895.02
  5. Step 5: Solve for x
    x = 48,889,319,895.02/254,611.35
  6. Step 6: Final answer
    x = 192,015.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.