Home / 132,651.28-183,057.66-72,221.80

Finding the Fourth Proportional to 132,651.28, 183,057.66 and 72,221.80

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Solution

The fourth proportional to 132,651.28, 183,057.66 and 72,221.80 is: 99,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,651.28 : 183,057.66 = 72,221.80 : x
  2. Step 2: Convert to fraction form
    132,651.28/183,057.66 = 72,221.80/x
  3. Step 3: Cross multiply
    132,651.28x = 183,057.66 × 72,221.80
  4. Step 4: Simplify right side
    132,651.28x = 13,220,753,708.99
  5. Step 5: Solve for x
    x = 13,220,753,708.99/132,651.28
  6. Step 6: Final answer
    x = 99,665.48

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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.