Home / 133,145.22-183,744.94-78,744.02

Finding the Fourth Proportional to 133,145.22, 183,744.94 and 78,744.02

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Solution

The fourth proportional to 133,145.22, 183,744.94 and 78,744.02 is: 108,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,145.22 : 183,744.94 = 78,744.02 : x
  2. Step 2: Convert to fraction form
    133,145.22/183,744.94 = 78,744.02/x
  3. Step 3: Cross multiply
    133,145.22x = 183,744.94 × 78,744.02
  4. Step 4: Simplify right side
    133,145.22x = 14,468,816,132.57
  5. Step 5: Solve for x
    x = 14,468,816,132.57/133,145.22
  6. Step 6: Final answer
    x = 108,669.44

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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.