Home / 128,136.92-176,817.18-82,816.28

Finding the Fourth Proportional to 128,136.92, 176,817.18 and 82,816.28

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Solution

The fourth proportional to 128,136.92, 176,817.18 and 82,816.28 is: 114,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,136.92 : 176,817.18 = 82,816.28 : x
  2. Step 2: Convert to fraction form
    128,136.92/176,817.18 = 82,816.28/x
  3. Step 3: Cross multiply
    128,136.92x = 176,817.18 × 82,816.28
  4. Step 4: Simplify right side
    128,136.92x = 14,643,341,087.69
  5. Step 5: Solve for x
    x = 14,643,341,087.69/128,136.92
  6. Step 6: Final answer
    x = 114,278.86

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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.