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Finding the Fourth Proportional to 186,874.40, 258,101.20 and 136,113.28

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Solution

The fourth proportional to 186,874.40, 258,101.20 and 136,113.28 is: 187,992.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,874.40 : 258,101.20 = 136,113.28 : x
  2. Step 2: Convert to fraction form
    186,874.40/258,101.20 = 136,113.28/x
  3. Step 3: Cross multiply
    186,874.40x = 258,101.20 × 136,113.28
  4. Step 4: Simplify right side
    186,874.40x = 35,131,000,903.94
  5. Step 5: Solve for x
    x = 35,131,000,903.94/186,874.40
  6. Step 6: Final answer
    x = 187,992.58

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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.