Home / 128,183.71-176,897.09-70,826.73

Finding the Fourth Proportional to 128,183.71, 176,897.09 and 70,826.73

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Solution

The fourth proportional to 128,183.71, 176,897.09 and 70,826.73 is: 97,742.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,183.71 : 176,897.09 = 70,826.73 : x
  2. Step 2: Convert to fraction form
    128,183.71/176,897.09 = 70,826.73/x
  3. Step 3: Cross multiply
    128,183.71x = 176,897.09 × 70,826.73
  4. Step 4: Simplify right side
    128,183.71x = 12,529,041,723.37
  5. Step 5: Solve for x
    x = 12,529,041,723.37/128,183.71
  6. Step 6: Final answer
    x = 97,742.85

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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.