Home / 136,485.82-188,354.40-79,125.36

Finding the Fourth Proportional to 136,485.82, 188,354.40 and 79,125.36

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Solution

The fourth proportional to 136,485.82, 188,354.40 and 79,125.36 is: 109,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,485.82 : 188,354.40 = 79,125.36 : x
  2. Step 2: Convert to fraction form
    136,485.82/188,354.40 = 79,125.36/x
  3. Step 3: Cross multiply
    136,485.82x = 188,354.40 × 79,125.36
  4. Step 4: Simplify right side
    136,485.82x = 14,903,609,707.58
  5. Step 5: Solve for x
    x = 14,903,609,707.58/136,485.82
  6. Step 6: Final answer
    x = 109,195.30

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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.