Home / 136,531.89-188,410.86-79,181.46

Finding the Fourth Proportional to 136,531.89, 188,410.86 and 79,181.46

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Solution

The fourth proportional to 136,531.89, 188,410.86 and 79,181.46 is: 109,268.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,531.89 : 188,410.86 = 79,181.46 : x
  2. Step 2: Convert to fraction form
    136,531.89/188,410.86 = 79,181.46/x
  3. Step 3: Cross multiply
    136,531.89x = 188,410.86 × 79,181.46
  4. Step 4: Simplify right side
    136,531.89x = 14,918,646,974.66
  5. Step 5: Solve for x
    x = 14,918,646,974.66/136,531.89
  6. Step 6: Final answer
    x = 109,268.59

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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.