Home / 127,872,909.20-191,809,363.80-91,593,203.60

Finding the Fourth Proportional to 127,872,909.20, 191,809,363.80 and 91,593,203.60

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Solution

The fourth proportional to 127,872,909.20, 191,809,363.80 and 91,593,203.60 is: 137,389,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,872,909.20 : 191,809,363.80 = 91,593,203.60 : x
  2. Step 2: Convert to fraction form
    127,872,909.20/191,809,363.80 = 91,593,203.60/x
  3. Step 3: Cross multiply
    127,872,909.20x = 191,809,363.80 × 91,593,203.60
  4. Step 4: Simplify right side
    127,872,909.20x = 17,568,434,110,919,870
  5. Step 5: Solve for x
    x = 17,568,434,110,919,870/127,872,909.20
  6. Step 6: Final answer
    x = 137,389,805.40

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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.