Home / 128,513,135.88-177,494,146.38-86,624,956.26

Finding the Fourth Proportional to 128,513,135.88, 177,494,146.38 and 86,624,956.26

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Solution

The fourth proportional to 128,513,135.88, 177,494,146.38 and 86,624,956.26 is: 119,640,864.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,513,135.88 : 177,494,146.38 = 86,624,956.26 : x
  2. Step 2: Convert to fraction form
    128,513,135.88/177,494,146.38 = 86,624,956.26/x
  3. Step 3: Cross multiply
    128,513,135.88x = 177,494,146.38 × 86,624,956.26
  4. Step 4: Simplify right side
    128,513,135.88x = 15,375,422,666,573,538
  5. Step 5: Solve for x
    x = 15,375,422,666,573,538/128,513,135.88
  6. Step 6: Final answer
    x = 119,640,864.42

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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.