Home / 128,664,577,107.60-192,996,865,661.40-86,870,356,256.40

Finding the Fourth Proportional to 128,664,577,107.60, 192,996,865,661.40 and 86,870,356,256.40

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Solution

The fourth proportional to 128,664,577,107.60, 192,996,865,661.40 and 86,870,356,256.40 is: 130,305,534,384.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,664,577,107.60 : 192,996,865,661.40 = 86,870,356,256.40 : x
  2. Step 2: Convert to fraction form
    128,664,577,107.60/192,996,865,661.40 = 86,870,356,256.40/x
  3. Step 3: Cross multiply
    128,664,577,107.60x = 192,996,865,661.40 × 86,870,356,256.40
  4. Step 4: Simplify right side
    128,664,577,107.60x = 16,765,706,476,374,387,064,832
  5. Step 5: Solve for x
    x = 16,765,706,476,374,387,064,832/128,664,577,107.60
  6. Step 6: Final answer
    x = 130,305,534,384.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.