Home / 137,182.21-189,318.81-76,749.24

Finding the Fourth Proportional to 137,182.21, 189,318.81 and 76,749.24

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Solution

The fourth proportional to 137,182.21, 189,318.81 and 76,749.24 is: 105,918.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,182.21 : 189,318.81 = 76,749.24 : x
  2. Step 2: Convert to fraction form
    137,182.21/189,318.81 = 76,749.24/x
  3. Step 3: Cross multiply
    137,182.21x = 189,318.81 × 76,749.24
  4. Step 4: Simplify right side
    137,182.21x = 14,530,074,785.20
  5. Step 5: Solve for x
    x = 14,530,074,785.20/137,182.21
  6. Step 6: Final answer
    x = 105,918.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.