Home / 136,589.90-188,493.28-76,161.26

Finding the Fourth Proportional to 136,589.90, 188,493.28 and 76,161.26

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Solution

The fourth proportional to 136,589.90, 188,493.28 and 76,161.26 is: 105,102.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,589.90 : 188,493.28 = 76,161.26 : x
  2. Step 2: Convert to fraction form
    136,589.90/188,493.28 = 76,161.26/x
  3. Step 3: Cross multiply
    136,589.90x = 188,493.28 × 76,161.26
  4. Step 4: Simplify right side
    136,589.90x = 14,355,885,987.16
  5. Step 5: Solve for x
    x = 14,355,885,987.16/136,589.90
  6. Step 6: Final answer
    x = 105,102.11

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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.