Home / 136,845.05-188,846.45-76,415.51

Finding the Fourth Proportional to 136,845.05, 188,846.45 and 76,415.51

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Solution

The fourth proportional to 136,845.05, 188,846.45 and 76,415.51 is: 105,453.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,845.05 : 188,846.45 = 76,415.51 : x
  2. Step 2: Convert to fraction form
    136,845.05/188,846.45 = 76,415.51/x
  3. Step 3: Cross multiply
    136,845.05x = 188,846.45 × 76,415.51
  4. Step 4: Simplify right side
    136,845.05x = 14,430,796,462.13
  5. Step 5: Solve for x
    x = 14,430,796,462.13/136,845.05
  6. Step 6: Final answer
    x = 105,453.55

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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.