Home / 128,160.68-175,577.21-123,368.85

Finding the Fourth Proportional to 128,160.68, 175,577.21 and 123,368.85

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Solution

The fourth proportional to 128,160.68, 175,577.21 and 123,368.85 is: 169,012.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,160.68 : 175,577.21 = 123,368.85 : x
  2. Step 2: Convert to fraction form
    128,160.68/175,577.21 = 123,368.85/x
  3. Step 3: Cross multiply
    128,160.68x = 175,577.21 × 123,368.85
  4. Step 4: Simplify right side
    128,160.68x = 21,660,758,329.70
  5. Step 5: Solve for x
    x = 21,660,758,329.70/128,160.68
  6. Step 6: Final answer
    x = 169,012.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.