Home / 128,520,347.88-177,353,105.73-69,781,668.60

Finding the Fourth Proportional to 128,520,347.88, 177,353,105.73 and 69,781,668.60

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Solution

The fourth proportional to 128,520,347.88, 177,353,105.73 and 69,781,668.60 is: 96,296,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,520,347.88 : 177,353,105.73 = 69,781,668.60 : x
  2. Step 2: Convert to fraction form
    128,520,347.88/177,353,105.73 = 69,781,668.60/x
  3. Step 3: Cross multiply
    128,520,347.88x = 177,353,105.73 × 69,781,668.60
  4. Step 4: Simplify right side
    128,520,347.88x = 12,375,995,649,231,620
  5. Step 5: Solve for x
    x = 12,375,995,649,231,620/128,520,347.88
  6. Step 6: Final answer
    x = 96,296,001.79

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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.