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Finding the Fourth Proportional to 144,457.11, 199,361.25 and 80,815.41

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Solution

The fourth proportional to 144,457.11, 199,361.25 and 80,815.41 is: 111,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,457.11 : 199,361.25 = 80,815.41 : x
  2. Step 2: Convert to fraction form
    144,457.11/199,361.25 = 80,815.41/x
  3. Step 3: Cross multiply
    144,457.11x = 199,361.25 × 80,815.41
  4. Step 4: Simplify right side
    144,457.11x = 16,111,461,156.86
  5. Step 5: Solve for x
    x = 16,111,461,156.86/144,457.11
  6. Step 6: Final answer
    x = 111,531.11

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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.