Home / 137,101.82-189,157.46-76,664.30

Finding the Fourth Proportional to 137,101.82, 189,157.46 and 76,664.30

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Solution

The fourth proportional to 137,101.82, 189,157.46 and 76,664.30 is: 105,772.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,101.82 : 189,157.46 = 76,664.30 : x
  2. Step 2: Convert to fraction form
    137,101.82/189,157.46 = 76,664.30/x
  3. Step 3: Cross multiply
    137,101.82x = 189,157.46 × 76,664.30
  4. Step 4: Simplify right side
    137,101.82x = 14,501,624,260.68
  5. Step 5: Solve for x
    x = 14,501,624,260.68/137,101.82
  6. Step 6: Final answer
    x = 105,772.66

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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.