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Finding the Fourth Proportional to 130,628.40, 196,234.20 and 125,671.20

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Solution

The fourth proportional to 130,628.40, 196,234.20 and 125,671.20 is: 188,787.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,628.40 : 196,234.20 = 125,671.20 : x
  2. Step 2: Convert to fraction form
    130,628.40/196,234.20 = 125,671.20/x
  3. Step 3: Cross multiply
    130,628.40x = 196,234.20 × 125,671.20
  4. Step 4: Simplify right side
    130,628.40x = 24,660,987,395.04
  5. Step 5: Solve for x
    x = 24,660,987,395.04/130,628.40
  6. Step 6: Final answer
    x = 188,787.33

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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.