Home / 202,110,778.80-303,307,885.80-129,504,128.40

Finding the Fourth Proportional to 202,110,778.80, 303,307,885.80 and 129,504,128.40

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Solution

The fourth proportional to 202,110,778.80, 303,307,885.80 and 129,504,128.40 is: 194,346,999.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,110,778.80 : 303,307,885.80 = 129,504,128.40 : x
  2. Step 2: Convert to fraction form
    202,110,778.80/303,307,885.80 = 129,504,128.40/x
  3. Step 3: Cross multiply
    202,110,778.80x = 303,307,885.80 × 129,504,128.40
  4. Step 4: Simplify right side
    202,110,778.80x = 39,279,623,387,375,744
  5. Step 5: Solve for x
    x = 39,279,623,387,375,744/202,110,778.80
  6. Step 6: Final answer
    x = 194,346,999.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.