Home / 128,515.32-177,406.74-96,692.04

Finding the Fourth Proportional to 128,515.32, 177,406.74 and 96,692.04

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Solution

The fourth proportional to 128,515.32, 177,406.74 and 96,692.04 is: 133,476.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,515.32 : 177,406.74 = 96,692.04 : x
  2. Step 2: Convert to fraction form
    128,515.32/177,406.74 = 96,692.04/x
  3. Step 3: Cross multiply
    128,515.32x = 177,406.74 × 96,692.04
  4. Step 4: Simplify right side
    128,515.32x = 17,153,819,600.35
  5. Step 5: Solve for x
    x = 17,153,819,600.35/128,515.32
  6. Step 6: Final answer
    x = 133,476.85

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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.