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Finding the Fourth Proportional to 132,751.45, 183,113.31 and 78,996.34

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Solution

The fourth proportional to 132,751.45, 183,113.31 and 78,996.34 is: 108,965.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,751.45 : 183,113.31 = 78,996.34 : x
  2. Step 2: Convert to fraction form
    132,751.45/183,113.31 = 78,996.34/x
  3. Step 3: Cross multiply
    132,751.45x = 183,113.31 × 78,996.34
  4. Step 4: Simplify right side
    132,751.45x = 14,465,281,376.06
  5. Step 5: Solve for x
    x = 14,465,281,376.06/132,751.45
  6. Step 6: Final answer
    x = 108,965.15

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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.