Home / 127,819,007.60-191,728,511.40-81,902,505.20

Finding the Fourth Proportional to 127,819,007.60, 191,728,511.40 and 81,902,505.20

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Solution

The fourth proportional to 127,819,007.60, 191,728,511.40 and 81,902,505.20 is: 122,853,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,819,007.60 : 191,728,511.40 = 81,902,505.20 : x
  2. Step 2: Convert to fraction form
    127,819,007.60/191,728,511.40 = 81,902,505.20/x
  3. Step 3: Cross multiply
    127,819,007.60x = 191,728,511.40 × 81,902,505.20
  4. Step 4: Simplify right side
    127,819,007.60x = 15,703,045,401,926,760
  5. Step 5: Solve for x
    x = 15,703,045,401,926,760/127,819,007.60
  6. Step 6: Final answer
    x = 122,853,757.80

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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.