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Finding the Fourth Proportional to 132,630.69, 183,028.44 and 72,201.81

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Solution

The fourth proportional to 132,630.69, 183,028.44 and 72,201.81 is: 99,637.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,630.69 : 183,028.44 = 72,201.81 : x
  2. Step 2: Convert to fraction form
    132,630.69/183,028.44 = 72,201.81/x
  3. Step 3: Cross multiply
    132,630.69x = 183,028.44 × 72,201.81
  4. Step 4: Simplify right side
    132,630.69x = 13,214,984,649.48
  5. Step 5: Solve for x
    x = 13,214,984,649.48/132,630.69
  6. Step 6: Final answer
    x = 99,637.46

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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.