Home / 144,768.18-199,788.30-81,126.48

Finding the Fourth Proportional to 144,768.18, 199,788.30 and 81,126.48

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Solution

The fourth proportional to 144,768.18, 199,788.30 and 81,126.48 is: 111,959.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,768.18 : 199,788.30 = 81,126.48 : x
  2. Step 2: Convert to fraction form
    144,768.18/199,788.30 = 81,126.48/x
  3. Step 3: Cross multiply
    144,768.18x = 199,788.30 × 81,126.48
  4. Step 4: Simplify right side
    144,768.18x = 16,208,121,524.18
  5. Step 5: Solve for x
    x = 16,208,121,524.18/144,768.18
  6. Step 6: Final answer
    x = 111,959.14

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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.