Home / 128,577.15-177,398.07-83,183.23

Finding the Fourth Proportional to 128,577.15, 177,398.07 and 83,183.23

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Solution

The fourth proportional to 128,577.15, 177,398.07 and 83,183.23 is: 114,768.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,577.15 : 177,398.07 = 83,183.23 : x
  2. Step 2: Convert to fraction form
    128,577.15/177,398.07 = 83,183.23/x
  3. Step 3: Cross multiply
    128,577.15x = 177,398.07 × 83,183.23
  4. Step 4: Simplify right side
    128,577.15x = 14,756,543,571.38
  5. Step 5: Solve for x
    x = 14,756,543,571.38/128,577.15
  6. Step 6: Final answer
    x = 114,768.01

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Double scale
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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.