Home / 128,183.40-176,896.65-70,826.41

Finding the Fourth Proportional to 128,183.40, 176,896.65 and 70,826.41

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Solution

The fourth proportional to 128,183.40, 176,896.65 and 70,826.41 is: 97,742.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,183.40 : 176,896.65 = 70,826.41 : x
  2. Step 2: Convert to fraction form
    128,183.40/176,896.65 = 70,826.41/x
  3. Step 3: Cross multiply
    128,183.40x = 176,896.65 × 70,826.41
  4. Step 4: Simplify right side
    128,183.40x = 12,528,955,738.11
  5. Step 5: Solve for x
    x = 12,528,955,738.11/128,183.40
  6. Step 6: Final answer
    x = 97,742.42

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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.