Home / 128,544.92-177,389.77-71,183.11

Finding the Fourth Proportional to 128,544.92, 177,389.77 and 71,183.11

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Solution

The fourth proportional to 128,544.92, 177,389.77 and 71,183.11 is: 98,231.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,544.92 : 177,389.77 = 71,183.11 : x
  2. Step 2: Convert to fraction form
    128,544.92/177,389.77 = 71,183.11/x
  3. Step 3: Cross multiply
    128,544.92x = 177,389.77 × 71,183.11
  4. Step 4: Simplify right side
    128,544.92x = 12,627,154,267.92
  5. Step 5: Solve for x
    x = 12,627,154,267.92/128,544.92
  6. Step 6: Final answer
    x = 98,231.45

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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.