Home / 126,945,961.20-190,418,941.80-86,131,292.40

Finding the Fourth Proportional to 126,945,961.20, 190,418,941.80 and 86,131,292.40

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Solution

The fourth proportional to 126,945,961.20, 190,418,941.80 and 86,131,292.40 is: 129,196,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,945,961.20 : 190,418,941.80 = 86,131,292.40 : x
  2. Step 2: Convert to fraction form
    126,945,961.20/190,418,941.80 = 86,131,292.40/x
  3. Step 3: Cross multiply
    126,945,961.20x = 190,418,941.80 × 86,131,292.40
  4. Step 4: Simplify right side
    126,945,961.20x = 16,401,029,554,674,384
  5. Step 5: Solve for x
    x = 16,401,029,554,674,384/126,945,961.20
  6. Step 6: Final answer
    x = 129,196,938.60

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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.