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Finding the Fourth Proportional to 136,652.51, 188,580.82 and 76,227.08

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Solution

The fourth proportional to 136,652.51, 188,580.82 and 76,227.08 is: 105,193.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,652.51 : 188,580.82 = 76,227.08 : x
  2. Step 2: Convert to fraction form
    136,652.51/188,580.82 = 76,227.08/x
  3. Step 3: Cross multiply
    136,652.51x = 188,580.82 × 76,227.08
  4. Step 4: Simplify right side
    136,652.51x = 14,374,965,252.61
  5. Step 5: Solve for x
    x = 14,374,965,252.61/136,652.51
  6. Step 6: Final answer
    x = 105,193.57

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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.