Home / 126,172.20-189,258.30-103,621.80

Finding the Fourth Proportional to 126,172.20, 189,258.30 and 103,621.80

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Solution

The fourth proportional to 126,172.20, 189,258.30 and 103,621.80 is: 155,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,172.20 : 189,258.30 = 103,621.80 : x
  2. Step 2: Convert to fraction form
    126,172.20/189,258.30 = 103,621.80/x
  3. Step 3: Cross multiply
    126,172.20x = 189,258.30 × 103,621.80
  4. Step 4: Simplify right side
    126,172.20x = 19,611,285,710.94
  5. Step 5: Solve for x
    x = 19,611,285,710.94/126,172.20
  6. Step 6: Final answer
    x = 155,432.70

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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.