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Finding the Fourth Proportional to 132,751.95, 183,114 and 78,996.84

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Solution

The fourth proportional to 132,751.95, 183,114 and 78,996.84 is: 108,965.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,751.95 : 183,114 = 78,996.84 : x
  2. Step 2: Convert to fraction form
    132,751.95/183,114 = 78,996.84/x
  3. Step 3: Cross multiply
    132,751.95x = 183,114 × 78,996.84
  4. Step 4: Simplify right side
    132,751.95x = 14,465,427,359.76
  5. Step 5: Solve for x
    x = 14,465,427,359.76/132,751.95
  6. Step 6: Final answer
    x = 108,965.84

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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.