Home / 136,518.63-188,353.96-79,146.50

Finding the Fourth Proportional to 136,518.63, 188,353.96 and 79,146.50

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Solution

The fourth proportional to 136,518.63, 188,353.96 and 79,146.50 is: 109,197.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,518.63 : 188,353.96 = 79,146.50 : x
  2. Step 2: Convert to fraction form
    136,518.63/188,353.96 = 79,146.50/x
  3. Step 3: Cross multiply
    136,518.63x = 188,353.96 × 79,146.50
  4. Step 4: Simplify right side
    136,518.63x = 14,907,557,766.52
  5. Step 5: Solve for x
    x = 14,907,557,766.52/136,518.63
  6. Step 6: Final answer
    x = 109,197.97

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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.