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Finding the Fourth Proportional to 133,326.43, 199,989.65 and 53,400.69

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Solution

The fourth proportional to 133,326.43, 199,989.65 and 53,400.69 is: 80,101.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,326.43 : 199,989.65 = 53,400.69 : x
  2. Step 2: Convert to fraction form
    133,326.43/199,989.65 = 53,400.69/x
  3. Step 3: Cross multiply
    133,326.43x = 199,989.65 × 53,400.69
  4. Step 4: Simplify right side
    133,326.43x = 10,679,585,436.36
  5. Step 5: Solve for x
    x = 10,679,585,436.36/133,326.43
  6. Step 6: Final answer
    x = 80,101.04

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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.