Home / 128,719,195.20-193,078,792.80-92,250,532.80

Finding the Fourth Proportional to 128,719,195.20, 193,078,792.80 and 92,250,532.80

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Solution

The fourth proportional to 128,719,195.20, 193,078,792.80 and 92,250,532.80 is: 138,375,799.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,719,195.20 : 193,078,792.80 = 92,250,532.80 : x
  2. Step 2: Convert to fraction form
    128,719,195.20/193,078,792.80 = 92,250,532.80/x
  3. Step 3: Cross multiply
    128,719,195.20x = 193,078,792.80 × 92,250,532.80
  4. Step 4: Simplify right side
    128,719,195.20x = 17,811,621,508,180,804
  5. Step 5: Solve for x
    x = 17,811,621,508,180,804/128,719,195.20
  6. Step 6: Final answer
    x = 138,375,799.20

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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.