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Finding the Fourth Proportional to 132,859.61, 183,350.66 and 79,137.30

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Solution

The fourth proportional to 132,859.61, 183,350.66 and 79,137.30 is: 109,212.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,859.61 : 183,350.66 = 79,137.30 : x
  2. Step 2: Convert to fraction form
    132,859.61/183,350.66 = 79,137.30/x
  3. Step 3: Cross multiply
    132,859.61x = 183,350.66 × 79,137.30
  4. Step 4: Simplify right side
    132,859.61x = 14,509,875,789.93
  5. Step 5: Solve for x
    x = 14,509,875,789.93/132,859.61
  6. Step 6: Final answer
    x = 109,212.09

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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.