Home / 197,120.64-271,931.36-129,107.69

Finding the Fourth Proportional to 197,120.64, 271,931.36 and 129,107.69

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Solution

The fourth proportional to 197,120.64, 271,931.36 and 129,107.69 is: 178,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,120.64 : 271,931.36 = 129,107.69 : x
  2. Step 2: Convert to fraction form
    197,120.64/271,931.36 = 129,107.69/x
  3. Step 3: Cross multiply
    197,120.64x = 271,931.36 × 129,107.69
  4. Step 4: Simplify right side
    197,120.64x = 35,108,427,722.96
  5. Step 5: Solve for x
    x = 35,108,427,722.96/197,120.64
  6. Step 6: Final answer
    x = 178,106.30

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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.