Home / 194,627.40-291,941.10-128,142.60

Finding the Fourth Proportional to 194,627.40, 291,941.10 and 128,142.60

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Solution

The fourth proportional to 194,627.40, 291,941.10 and 128,142.60 is: 192,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,627.40 : 291,941.10 = 128,142.60 : x
  2. Step 2: Convert to fraction form
    194,627.40/291,941.10 = 128,142.60/x
  3. Step 3: Cross multiply
    194,627.40x = 291,941.10 × 128,142.60
  4. Step 4: Simplify right side
    194,627.40x = 37,410,091,600.86
  5. Step 5: Solve for x
    x = 37,410,091,600.86/194,627.40
  6. Step 6: Final answer
    x = 192,213.90

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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.