Home / 137,121.36-189,227.92-76,693.04

Finding the Fourth Proportional to 137,121.36, 189,227.92 and 76,693.04

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Solution

The fourth proportional to 137,121.36, 189,227.92 and 76,693.04 is: 105,836.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,121.36 : 189,227.92 = 76,693.04 : x
  2. Step 2: Convert to fraction form
    137,121.36/189,227.92 = 76,693.04/x
  3. Step 3: Cross multiply
    137,121.36x = 189,227.92 × 76,693.04
  4. Step 4: Simplify right side
    137,121.36x = 14,512,464,437.68
  5. Step 5: Solve for x
    x = 14,512,464,437.68/137,121.36
  6. Step 6: Final answer
    x = 105,836.64

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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.