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Finding the Fourth Proportional to 136,934.55, 188,952.55 and 76,502.88

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Solution

The fourth proportional to 136,934.55, 188,952.55 and 76,502.88 is: 105,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,934.55 : 188,952.55 = 76,502.88 : x
  2. Step 2: Convert to fraction form
    136,934.55/188,952.55 = 76,502.88/x
  3. Step 3: Cross multiply
    136,934.55x = 188,952.55 × 76,502.88
  4. Step 4: Simplify right side
    136,934.55x = 14,455,414,067.09
  5. Step 5: Solve for x
    x = 14,455,414,067.09/136,934.55
  6. Step 6: Final answer
    x = 105,564.40

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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.