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Finding the Fourth Proportional to 200,159.64, 300,086.82 and 121,252.92

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Solution

The fourth proportional to 200,159.64, 300,086.82 and 121,252.92 is: 181,786.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,159.64 : 300,086.82 = 121,252.92 : x
  2. Step 2: Convert to fraction form
    200,159.64/300,086.82 = 121,252.92/x
  3. Step 3: Cross multiply
    200,159.64x = 300,086.82 × 121,252.92
  4. Step 4: Simplify right side
    200,159.64x = 36,386,403,178.51
  5. Step 5: Solve for x
    x = 36,386,403,178.51/200,159.64
  6. Step 6: Final answer
    x = 181,786.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.