Home / 199,756.26-275,702.40-128,226.78

Finding the Fourth Proportional to 199,756.26, 275,702.40 and 128,226.78

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Solution

The fourth proportional to 199,756.26, 275,702.40 and 128,226.78 is: 176,977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,756.26 : 275,702.40 = 128,226.78 : x
  2. Step 2: Convert to fraction form
    199,756.26/275,702.40 = 128,226.78/x
  3. Step 3: Cross multiply
    199,756.26x = 275,702.40 × 128,226.78
  4. Step 4: Simplify right side
    199,756.26x = 35,352,430,990.27
  5. Step 5: Solve for x
    x = 35,352,430,990.27/199,756.26
  6. Step 6: Final answer
    x = 176,977.84

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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.