Home / 128,519.27-177,266.45-89,692.28

Finding the Fourth Proportional to 128,519.27, 177,266.45 and 89,692.28

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Solution

The fourth proportional to 128,519.27, 177,266.45 and 89,692.28 is: 123,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,519.27 : 177,266.45 = 89,692.28 : x
  2. Step 2: Convert to fraction form
    128,519.27/177,266.45 = 89,692.28/x
  3. Step 3: Cross multiply
    128,519.27x = 177,266.45 × 89,692.28
  4. Step 4: Simplify right side
    128,519.27x = 15,899,430,733.21
  5. Step 5: Solve for x
    x = 15,899,430,733.21/128,519.27
  6. Step 6: Final answer
    x = 123,712.42

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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.