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Finding the Fourth Proportional to 132,696.88, 183,122.22 and 78,981.64

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Solution

The fourth proportional to 132,696.88, 183,122.22 and 78,981.64 is: 108,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,696.88 : 183,122.22 = 78,981.64 : x
  2. Step 2: Convert to fraction form
    132,696.88/183,122.22 = 78,981.64/x
  3. Step 3: Cross multiply
    132,696.88x = 183,122.22 × 78,981.64
  4. Step 4: Simplify right side
    132,696.88x = 14,463,293,256.04
  5. Step 5: Solve for x
    x = 14,463,293,256.04/132,696.88
  6. Step 6: Final answer
    x = 108,994.98

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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.