Home / 126,017.20-188,807.10-81,621.10

Finding the Fourth Proportional to 126,017.20, 188,807.10 and 81,621.10

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Solution

The fourth proportional to 126,017.20, 188,807.10 and 81,621.10 is: 122,290.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,017.20 : 188,807.10 = 81,621.10 : x
  2. Step 2: Convert to fraction form
    126,017.20/188,807.10 = 81,621.10/x
  3. Step 3: Cross multiply
    126,017.20x = 188,807.10 × 81,621.10
  4. Step 4: Simplify right side
    126,017.20x = 15,410,643,189.81
  5. Step 5: Solve for x
    x = 15,410,643,189.81/126,017.20
  6. Step 6: Final answer
    x = 122,290.00

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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.