Home / 128,438,362.44-177,245,404.20-69,701,014.80

Finding the Fourth Proportional to 128,438,362.44, 177,245,404.20 and 69,701,014.80

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Solution

The fourth proportional to 128,438,362.44, 177,245,404.20 and 69,701,014.80 is: 96,187,652.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,438,362.44 : 177,245,404.20 = 69,701,014.80 : x
  2. Step 2: Convert to fraction form
    128,438,362.44/177,245,404.20 = 69,701,014.80/x
  3. Step 3: Cross multiply
    128,438,362.44x = 177,245,404.20 × 69,701,014.80
  4. Step 4: Simplify right side
    128,438,362.44x = 12,354,184,541,376,180
  5. Step 5: Solve for x
    x = 12,354,184,541,376,180/128,438,362.44
  6. Step 6: Final answer
    x = 96,187,652.25

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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.