Home / 100,530,824.76-138,738,477.78-75,707,215.65

Finding the Fourth Proportional to 100,530,824.76, 138,738,477.78 and 75,707,215.65

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Solution

The fourth proportional to 100,530,824.76, 138,738,477.78 and 75,707,215.65 is: 104,480,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,530,824.76 : 138,738,477.78 = 75,707,215.65 : x
  2. Step 2: Convert to fraction form
    100,530,824.76/138,738,477.78 = 75,707,215.65/x
  3. Step 3: Cross multiply
    100,530,824.76x = 138,738,477.78 × 75,707,215.65
  4. Step 4: Simplify right side
    100,530,824.76x = 10,503,503,856,243,194
  5. Step 5: Solve for x
    x = 10,503,503,856,243,194/100,530,824.76
  6. Step 6: Final answer
    x = 104,480,430.57

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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.