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Finding the Fourth Proportional to 133,053.75, 183,645.02 and 87,739.92

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Solution

The fourth proportional to 133,053.75, 183,645.02 and 87,739.92 is: 121,101.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,053.75 : 183,645.02 = 87,739.92 : x
  2. Step 2: Convert to fraction form
    133,053.75/183,645.02 = 87,739.92/x
  3. Step 3: Cross multiply
    133,053.75x = 183,645.02 × 87,739.92
  4. Step 4: Simplify right side
    133,053.75x = 16,112,999,582.55
  5. Step 5: Solve for x
    x = 16,112,999,582.55/133,053.75
  6. Step 6: Final answer
    x = 121,101.43

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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.