Home / 128,876,685.66-193,089,461.31-87,802,791.75

Finding the Fourth Proportional to 128,876,685.66, 193,089,461.31 and 87,802,791.75

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Solution

The fourth proportional to 128,876,685.66, 193,089,461.31 and 87,802,791.75 is: 131,550,510.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,876,685.66 : 193,089,461.31 = 87,802,791.75 : x
  2. Step 2: Convert to fraction form
    128,876,685.66/193,089,461.31 = 87,802,791.75/x
  3. Step 3: Cross multiply
    128,876,685.66x = 193,089,461.31 × 87,802,791.75
  4. Step 4: Simplify right side
    128,876,685.66x = 16,953,793,760,521,612
  5. Step 5: Solve for x
    x = 16,953,793,760,521,612/128,876,685.66
  6. Step 6: Final answer
    x = 131,550,510.27

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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.