Home / 128,304,006.40-192,456,009.60-70,766,660.80

Finding the Fourth Proportional to 128,304,006.40, 192,456,009.60 and 70,766,660.80

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Solution

The fourth proportional to 128,304,006.40, 192,456,009.60 and 70,766,660.80 is: 106,149,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,006.40 : 192,456,009.60 = 70,766,660.80 : x
  2. Step 2: Convert to fraction form
    128,304,006.40/192,456,009.60 = 70,766,660.80/x
  3. Step 3: Cross multiply
    128,304,006.40x = 192,456,009.60 × 70,766,660.80
  4. Step 4: Simplify right side
    128,304,006.40x = 13,619,469,150,284,742
  5. Step 5: Solve for x
    x = 13,619,469,150,284,742/128,304,006.40
  6. Step 6: Final answer
    x = 106,149,991.20

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1.5x scale

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.