Home / 129,283.57-178,323.62-83,880.44

Finding the Fourth Proportional to 129,283.57, 178,323.62 and 83,880.44

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Solution

The fourth proportional to 129,283.57, 178,323.62 and 83,880.44 is: 115,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,283.57 : 178,323.62 = 83,880.44 : x
  2. Step 2: Convert to fraction form
    129,283.57/178,323.62 = 83,880.44/x
  3. Step 3: Cross multiply
    129,283.57x = 178,323.62 × 83,880.44
  4. Step 4: Simplify right side
    129,283.57x = 14,957,863,707.99
  5. Step 5: Solve for x
    x = 14,957,863,707.99/129,283.57
  6. Step 6: Final answer
    x = 115,698.10

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1.5x scale

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.