Home / 144,721.96-199,720.20-81,058.36

Finding the Fourth Proportional to 144,721.96, 199,720.20 and 81,058.36

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Solution

The fourth proportional to 144,721.96, 199,720.20 and 81,058.36 is: 111,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,721.96 : 199,720.20 = 81,058.36 : x
  2. Step 2: Convert to fraction form
    144,721.96/199,720.20 = 81,058.36/x
  3. Step 3: Cross multiply
    144,721.96x = 199,720.20 × 81,058.36
  4. Step 4: Simplify right side
    144,721.96x = 16,188,991,870.87
  5. Step 5: Solve for x
    x = 16,188,991,870.87/144,721.96
  6. Step 6: Final answer
    x = 111,862.72

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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.