Home / 137,122.11-189,228.96-76,693.79

Finding the Fourth Proportional to 137,122.11, 189,228.96 and 76,693.79

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Solution

The fourth proportional to 137,122.11, 189,228.96 and 76,693.79 is: 105,837.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,122.11 : 189,228.96 = 76,693.79 : x
  2. Step 2: Convert to fraction form
    137,122.11/189,228.96 = 76,693.79/x
  3. Step 3: Cross multiply
    137,122.11x = 189,228.96 × 76,693.79
  4. Step 4: Simplify right side
    137,122.11x = 14,512,685,736.69
  5. Step 5: Solve for x
    x = 14,512,685,736.69/137,122.11
  6. Step 6: Final answer
    x = 105,837.68

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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.