Home / 136,636.90-203,581.55-128,997.44

Finding the Fourth Proportional to 136,636.90, 203,581.55 and 128,997.44

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Solution

The fourth proportional to 136,636.90, 203,581.55 and 128,997.44 is: 192,199.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,636.90 : 203,581.55 = 128,997.44 : x
  2. Step 2: Convert to fraction form
    136,636.90/203,581.55 = 128,997.44/x
  3. Step 3: Cross multiply
    136,636.90x = 203,581.55 × 128,997.44
  4. Step 4: Simplify right side
    136,636.90x = 26,261,498,781.23
  5. Step 5: Solve for x
    x = 26,261,498,781.23/136,636.90
  6. Step 6: Final answer
    x = 192,199.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.