Home / 128,428,372.68-177,231,631.47-69,691,050.24

Finding the Fourth Proportional to 128,428,372.68, 177,231,631.47 and 69,691,050.24

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Solution

The fourth proportional to 128,428,372.68, 177,231,631.47 and 69,691,050.24 is: 96,173,908.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,428,372.68 : 177,231,631.47 = 69,691,050.24 : x
  2. Step 2: Convert to fraction form
    128,428,372.68/177,231,631.47 = 69,691,050.24/x
  3. Step 3: Cross multiply
    128,428,372.68x = 177,231,631.47 × 69,691,050.24
  4. Step 4: Simplify right side
    128,428,372.68x = 12,351,458,532,892,934
  5. Step 5: Solve for x
    x = 12,351,458,532,892,934/128,428,372.68
  6. Step 6: Final answer
    x = 96,173,908.27

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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.