Home / 136,073.25-187,781.09-79,485.03

Finding the Fourth Proportional to 136,073.25, 187,781.09 and 79,485.03

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Solution

The fourth proportional to 136,073.25, 187,781.09 and 79,485.03 is: 109,689.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,073.25 : 187,781.09 = 79,485.03 : x
  2. Step 2: Convert to fraction form
    136,073.25/187,781.09 = 79,485.03/x
  3. Step 3: Cross multiply
    136,073.25x = 187,781.09 × 79,485.03
  4. Step 4: Simplify right side
    136,073.25x = 14,925,785,174.66
  5. Step 5: Solve for x
    x = 14,925,785,174.66/136,073.25
  6. Step 6: Final answer
    x = 109,689.34

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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.