Home / 126,141.81-189,268.61-66,963.21

Finding the Fourth Proportional to 126,141.81, 189,268.61 and 66,963.21

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Solution

The fourth proportional to 126,141.81, 189,268.61 and 66,963.21 is: 100,474.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,141.81 : 189,268.61 = 66,963.21 : x
  2. Step 2: Convert to fraction form
    126,141.81/189,268.61 = 66,963.21/x
  3. Step 3: Cross multiply
    126,141.81x = 189,268.61 × 66,963.21
  4. Step 4: Simplify right side
    126,141.81x = 12,674,033,343.02
  5. Step 5: Solve for x
    x = 12,674,033,343.02/126,141.81
  6. Step 6: Final answer
    x = 100,474.48

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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.