Home / 129,615.37-194,404.55-40,857.32

Finding the Fourth Proportional to 129,615.37, 194,404.55 and 40,857.32

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Solution

The fourth proportional to 129,615.37, 194,404.55 and 40,857.32 is: 61,280.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,615.37 : 194,404.55 = 40,857.32 : x
  2. Step 2: Convert to fraction form
    129,615.37/194,404.55 = 40,857.32/x
  3. Step 3: Cross multiply
    129,615.37x = 194,404.55 × 40,857.32
  4. Step 4: Simplify right side
    129,615.37x = 7,942,848,908.81
  5. Step 5: Solve for x
    x = 7,942,848,908.81/129,615.37
  6. Step 6: Final answer
    x = 61,280.15

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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.