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Finding the Fourth Proportional to 132,800, 183,261.60 and 72,371.18

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Solution

The fourth proportional to 132,800, 183,261.60 and 72,371.18 is: 99,870.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,800 : 183,261.60 = 72,371.18 : x
  2. Step 2: Convert to fraction form
    132,800/183,261.60 = 72,371.18/x
  3. Step 3: Cross multiply
    132,800x = 183,261.60 × 72,371.18
  4. Step 4: Simplify right side
    132,800x = 13,262,858,240.69
  5. Step 5: Solve for x
    x = 13,262,858,240.69/132,800
  6. Step 6: Final answer
    x = 99,870.92

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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.