Home / 136,010.78-187,786.40-121,625.79

Finding the Fourth Proportional to 136,010.78, 187,786.40 and 121,625.79

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Solution

The fourth proportional to 136,010.78, 187,786.40 and 121,625.79 is: 167,925.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,010.78 : 187,786.40 = 121,625.79 : x
  2. Step 2: Convert to fraction form
    136,010.78/187,786.40 = 121,625.79/x
  3. Step 3: Cross multiply
    136,010.78x = 187,786.40 × 121,625.79
  4. Step 4: Simplify right side
    136,010.78x = 22,839,668,623.07
  5. Step 5: Solve for x
    x = 22,839,668,623.07/136,010.78
  6. Step 6: Final answer
    x = 167,925.43

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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.