Home / 128,299.82-177,046.56-70,935.80

Finding the Fourth Proportional to 128,299.82, 177,046.56 and 70,935.80

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Solution

The fourth proportional to 128,299.82, 177,046.56 and 70,935.80 is: 97,887.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,299.82 : 177,046.56 = 70,935.80 : x
  2. Step 2: Convert to fraction form
    128,299.82/177,046.56 = 70,935.80/x
  3. Step 3: Cross multiply
    128,299.82x = 177,046.56 × 70,935.80
  4. Step 4: Simplify right side
    128,299.82x = 12,558,939,370.85
  5. Step 5: Solve for x
    x = 12,558,939,370.85/128,299.82
  6. Step 6: Final answer
    x = 97,887.43

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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.