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Finding the Fourth Proportional to 136,407.84, 188,192.88 and 82,654.08

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Solution

The fourth proportional to 136,407.84, 188,192.88 and 82,654.08 is: 114,032.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,407.84 : 188,192.88 = 82,654.08 : x
  2. Step 2: Convert to fraction form
    136,407.84/188,192.88 = 82,654.08/x
  3. Step 3: Cross multiply
    136,407.84x = 188,192.88 × 82,654.08
  4. Step 4: Simplify right side
    136,407.84x = 15,554,909,358.95
  5. Step 5: Solve for x
    x = 15,554,909,358.95/136,407.84
  6. Step 6: Final answer
    x = 114,032.37

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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.