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Finding the Fourth Proportional to 163,906.80, 245,860.20 and 144,661.20

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Solution

The fourth proportional to 163,906.80, 245,860.20 and 144,661.20 is: 216,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,906.80 : 245,860.20 = 144,661.20 : x
  2. Step 2: Convert to fraction form
    163,906.80/245,860.20 = 144,661.20/x
  3. Step 3: Cross multiply
    163,906.80x = 245,860.20 × 144,661.20
  4. Step 4: Simplify right side
    163,906.80x = 35,566,431,564.24
  5. Step 5: Solve for x
    x = 35,566,431,564.24/163,906.80
  6. Step 6: Final answer
    x = 216,991.80

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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.