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Finding the Fourth Proportional to 136,110.88, 187,832 and 75,681.04

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Solution

The fourth proportional to 136,110.88, 187,832 and 75,681.04 is: 104,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,110.88 : 187,832 = 75,681.04 : x
  2. Step 2: Convert to fraction form
    136,110.88/187,832 = 75,681.04/x
  3. Step 3: Cross multiply
    136,110.88x = 187,832 × 75,681.04
  4. Step 4: Simplify right side
    136,110.88x = 14,215,321,105.28
  5. Step 5: Solve for x
    x = 14,215,321,105.28/136,110.88
  6. Step 6: Final answer
    x = 104,439.27

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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.