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Finding the Fourth Proportional to 143,957.60, 216,033.60 and 80,777.60

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Solution

The fourth proportional to 143,957.60, 216,033.60 and 80,777.60 is: 121,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,957.60 : 216,033.60 = 80,777.60 : x
  2. Step 2: Convert to fraction form
    143,957.60/216,033.60 = 80,777.60/x
  3. Step 3: Cross multiply
    143,957.60x = 216,033.60 × 80,777.60
  4. Step 4: Simplify right side
    143,957.60x = 17,450,675,727.36
  5. Step 5: Solve for x
    x = 17,450,675,727.36/143,957.60
  6. Step 6: Final answer
    x = 121,220.94

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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.