Home / 205,454.21-283,707.16-129,105.63

Finding the Fourth Proportional to 205,454.21, 283,707.16 and 129,105.63

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Solution

The fourth proportional to 205,454.21, 283,707.16 and 129,105.63 is: 178,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,454.21 : 283,707.16 = 129,105.63 : x
  2. Step 2: Convert to fraction form
    205,454.21/283,707.16 = 129,105.63/x
  3. Step 3: Cross multiply
    205,454.21x = 283,707.16 × 129,105.63
  4. Step 4: Simplify right side
    205,454.21x = 36,628,191,304.55
  5. Step 5: Solve for x
    x = 36,628,191,304.55/205,454.21
  6. Step 6: Final answer
    x = 178,279.10

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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.