Home / 129,366.45-178,450.04-84,074.60

Finding the Fourth Proportional to 129,366.45, 178,450.04 and 84,074.60

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Solution

The fourth proportional to 129,366.45, 178,450.04 and 84,074.60 is: 115,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,366.45 : 178,450.04 = 84,074.60 : x
  2. Step 2: Convert to fraction form
    129,366.45/178,450.04 = 84,074.60/x
  3. Step 3: Cross multiply
    129,366.45x = 178,450.04 × 84,074.60
  4. Step 4: Simplify right side
    129,366.45x = 15,003,115,857.41
  5. Step 5: Solve for x
    x = 15,003,115,857.41/129,366.45
  6. Step 6: Final answer
    x = 115,973.77

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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.