Home / 126,566.40-189,619.20-103,065.60

Finding the Fourth Proportional to 126,566.40, 189,619.20 and 103,065.60

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Solution

The fourth proportional to 126,566.40, 189,619.20 and 103,065.60 is: 154,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,566.40 : 189,619.20 = 103,065.60 : x
  2. Step 2: Convert to fraction form
    126,566.40/189,619.20 = 103,065.60/x
  3. Step 3: Cross multiply
    126,566.40x = 189,619.20 × 103,065.60
  4. Step 4: Simplify right side
    126,566.40x = 19,543,216,619.52
  5. Step 5: Solve for x
    x = 19,543,216,619.52/126,566.40
  6. Step 6: Final answer
    x = 154,410.78

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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.