Home / 127,455.89-175,926.09-79,072.56

Finding the Fourth Proportional to 127,455.89, 175,926.09 and 79,072.56

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Solution

The fourth proportional to 127,455.89, 175,926.09 and 79,072.56 is: 109,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,455.89 : 175,926.09 = 79,072.56 : x
  2. Step 2: Convert to fraction form
    127,455.89/175,926.09 = 79,072.56/x
  3. Step 3: Cross multiply
    127,455.89x = 175,926.09 × 79,072.56
  4. Step 4: Simplify right side
    127,455.89x = 13,910,926,603.61
  5. Step 5: Solve for x
    x = 13,910,926,603.61/127,455.89
  6. Step 6: Final answer
    x = 109,143.07

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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.