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Finding the Fourth Proportional to 144,661.84, 216,804.26 and 80,617.42

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Solution

The fourth proportional to 144,661.84, 216,804.26 and 80,617.42 is: 120,821.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,661.84 : 216,804.26 = 80,617.42 : x
  2. Step 2: Convert to fraction form
    144,661.84/216,804.26 = 80,617.42/x
  3. Step 3: Cross multiply
    144,661.84x = 216,804.26 × 80,617.42
  4. Step 4: Simplify right side
    144,661.84x = 17,478,200,086.21
  5. Step 5: Solve for x
    x = 17,478,200,086.21/144,661.84
  6. Step 6: Final answer
    x = 120,821.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.