Home / 202,157.10-278,993.43-111,521.43

Finding the Fourth Proportional to 202,157.10, 278,993.43 and 111,521.43

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Solution

The fourth proportional to 202,157.10, 278,993.43 and 111,521.43 is: 153,908.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,157.10 : 278,993.43 = 111,521.43 : x
  2. Step 2: Convert to fraction form
    202,157.10/278,993.43 = 111,521.43/x
  3. Step 3: Cross multiply
    202,157.10x = 278,993.43 × 111,521.43
  4. Step 4: Simplify right side
    202,157.10x = 31,113,746,274.20
  5. Step 5: Solve for x
    x = 31,113,746,274.20/202,157.10
  6. Step 6: Final answer
    x = 153,908.75

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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.