Home / 199,830.03-275,888.46-128,336.09

Finding the Fourth Proportional to 199,830.03, 275,888.46 and 128,336.09

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Solution

The fourth proportional to 199,830.03, 275,888.46 and 128,336.09 is: 177,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,830.03 : 275,888.46 = 128,336.09 : x
  2. Step 2: Convert to fraction form
    199,830.03/275,888.46 = 128,336.09/x
  3. Step 3: Cross multiply
    199,830.03x = 275,888.46 × 128,336.09
  4. Step 4: Simplify right side
    199,830.03x = 35,406,446,232.52
  5. Step 5: Solve for x
    x = 35,406,446,232.52/199,830.03
  6. Step 6: Final answer
    x = 177,182.81

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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.