Home / 128,117.10-192,175.65-57,039.60

Finding the Fourth Proportional to 128,117.10, 192,175.65 and 57,039.60

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Solution

The fourth proportional to 128,117.10, 192,175.65 and 57,039.60 is: 85,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,117.10 : 192,175.65 = 57,039.60 : x
  2. Step 2: Convert to fraction form
    128,117.10/192,175.65 = 57,039.60/x
  3. Step 3: Cross multiply
    128,117.10x = 192,175.65 × 57,039.60
  4. Step 4: Simplify right side
    128,117.10x = 10,961,622,205.74
  5. Step 5: Solve for x
    x = 10,961,622,205.74/128,117.10
  6. Step 6: Final answer
    x = 85,559.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.