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Finding the Fourth Proportional to 145,550.39, 200,843.28 and 81,886.82

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Solution

The fourth proportional to 145,550.39, 200,843.28 and 81,886.82 is: 112,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,550.39 : 200,843.28 = 81,886.82 : x
  2. Step 2: Convert to fraction form
    145,550.39/200,843.28 = 81,886.82/x
  3. Step 3: Cross multiply
    145,550.39x = 200,843.28 × 81,886.82
  4. Step 4: Simplify right side
    145,550.39x = 16,446,416,513.35
  5. Step 5: Solve for x
    x = 16,446,416,513.35/145,550.39
  6. Step 6: Final answer
    x = 112,994.66

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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.