Home / 136,666.36-188,595.30-80,115.40

Finding the Fourth Proportional to 136,666.36, 188,595.30 and 80,115.40

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Solution

The fourth proportional to 136,666.36, 188,595.30 and 80,115.40 is: 110,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,666.36 : 188,595.30 = 80,115.40 : x
  2. Step 2: Convert to fraction form
    136,666.36/188,595.30 = 80,115.40/x
  3. Step 3: Cross multiply
    136,666.36x = 188,595.30 × 80,115.40
  4. Step 4: Simplify right side
    136,666.36x = 15,109,387,897.62
  5. Step 5: Solve for x
    x = 15,109,387,897.62/136,666.36
  6. Step 6: Final answer
    x = 110,556.74

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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.