Home / 128,011.73-176,614.02-82,716.39

Finding the Fourth Proportional to 128,011.73, 176,614.02 and 82,716.39

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Solution

The fourth proportional to 128,011.73, 176,614.02 and 82,716.39 is: 114,121.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011.73 : 176,614.02 = 82,716.39 : x
  2. Step 2: Convert to fraction form
    128,011.73/176,614.02 = 82,716.39/x
  3. Step 3: Cross multiply
    128,011.73x = 176,614.02 × 82,716.39
  4. Step 4: Simplify right side
    128,011.73x = 14,608,874,157.79
  5. Step 5: Solve for x
    x = 14,608,874,157.79/128,011.73
  6. Step 6: Final answer
    x = 114,121.38

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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.