Home / 128,501,473.36-177,160,759.68-102,127,893.61

Finding the Fourth Proportional to 128,501,473.36, 177,160,759.68 and 102,127,893.61

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Solution

The fourth proportional to 128,501,473.36, 177,160,759.68 and 102,127,893.61 is: 140,800,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,501,473.36 : 177,160,759.68 = 102,127,893.61 : x
  2. Step 2: Convert to fraction form
    128,501,473.36/177,160,759.68 = 102,127,893.61/x
  3. Step 3: Cross multiply
    128,501,473.36x = 177,160,759.68 × 102,127,893.61
  4. Step 4: Simplify right side
    128,501,473.36x = 18,093,055,216,465,820
  5. Step 5: Solve for x
    x = 18,093,055,216,465,820/128,501,473.36
  6. Step 6: Final answer
    x = 140,800,371.73

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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.