Home / 127,819,612.80-191,729,419.20-121,269,110.40

Finding the Fourth Proportional to 127,819,612.80, 191,729,419.20 and 121,269,110.40

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Solution

The fourth proportional to 127,819,612.80, 191,729,419.20 and 121,269,110.40 is: 181,903,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,819,612.80 : 191,729,419.20 = 121,269,110.40 : x
  2. Step 2: Convert to fraction form
    127,819,612.80/191,729,419.20 = 121,269,110.40/x
  3. Step 3: Cross multiply
    127,819,612.80x = 191,729,419.20 × 121,269,110.40
  4. Step 4: Simplify right side
    127,819,612.80x = 23,250,856,103,892,680
  5. Step 5: Solve for x
    x = 23,250,856,103,892,680/127,819,612.80
  6. Step 6: Final answer
    x = 181,903,665.60

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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.