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Finding the Fourth Proportional to 144,396.88, 216,172.98 and 84,241.40

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Solution

The fourth proportional to 144,396.88, 216,172.98 and 84,241.40 is: 126,115.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,396.88 : 216,172.98 = 84,241.40 : x
  2. Step 2: Convert to fraction form
    144,396.88/216,172.98 = 84,241.40/x
  3. Step 3: Cross multiply
    144,396.88x = 216,172.98 × 84,241.40
  4. Step 4: Simplify right side
    144,396.88x = 18,210,714,477.37
  5. Step 5: Solve for x
    x = 18,210,714,477.37/144,396.88
  6. Step 6: Final answer
    x = 126,115.71

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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.