Home / 144,840.78-199,877.25-79,428.66

Finding the Fourth Proportional to 144,840.78, 199,877.25 and 79,428.66

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Solution

The fourth proportional to 144,840.78, 199,877.25 and 79,428.66 is: 109,609.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,840.78 : 199,877.25 = 79,428.66 : x
  2. Step 2: Convert to fraction form
    144,840.78/199,877.25 = 79,428.66/x
  3. Step 3: Cross multiply
    144,840.78x = 199,877.25 × 79,428.66
  4. Step 4: Simplify right side
    144,840.78x = 15,875,982,131.99
  5. Step 5: Solve for x
    x = 15,875,982,131.99/144,840.78
  6. Step 6: Final answer
    x = 109,609.89

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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.