Home / 128,525.20-192,787.80-127,650.40

Finding the Fourth Proportional to 128,525.20, 192,787.80 and 127,650.40

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Solution

The fourth proportional to 128,525.20, 192,787.80 and 127,650.40 is: 191,475.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,525.20 : 192,787.80 = 127,650.40 : x
  2. Step 2: Convert to fraction form
    128,525.20/192,787.80 = 127,650.40/x
  3. Step 3: Cross multiply
    128,525.20x = 192,787.80 × 127,650.40
  4. Step 4: Simplify right side
    128,525.20x = 24,609,439,785.12
  5. Step 5: Solve for x
    x = 24,609,439,785.12/128,525.20
  6. Step 6: Final answer
    x = 191,475.60

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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.