Home / 136,556.80-188,451.84-76,137.28

Finding the Fourth Proportional to 136,556.80, 188,451.84 and 76,137.28

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Solution

The fourth proportional to 136,556.80, 188,451.84 and 76,137.28 is: 105,071.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,556.80 : 188,451.84 = 76,137.28 : x
  2. Step 2: Convert to fraction form
    136,556.80/188,451.84 = 76,137.28/x
  3. Step 3: Cross multiply
    136,556.80x = 188,451.84 × 76,137.28
  4. Step 4: Simplify right side
    136,556.80x = 14,348,210,508.60
  5. Step 5: Solve for x
    x = 14,348,210,508.60/136,556.80
  6. Step 6: Final answer
    x = 105,071.37

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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.