Home / 144,721.72-199,723.50-81,055.80

Finding the Fourth Proportional to 144,721.72, 199,723.50 and 81,055.80

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Solution

The fourth proportional to 144,721.72, 199,723.50 and 81,055.80 is: 111,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,721.72 : 199,723.50 = 81,055.80 : x
  2. Step 2: Convert to fraction form
    144,721.72/199,723.50 = 81,055.80/x
  3. Step 3: Cross multiply
    144,721.72x = 199,723.50 × 81,055.80
  4. Step 4: Simplify right side
    144,721.72x = 16,188,748,071.30
  5. Step 5: Solve for x
    x = 16,188,748,071.30/144,721.72
  6. Step 6: Final answer
    x = 111,861.22

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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.