Home / 127,494,339.40-191,147,030.70-86,451,347.80

Finding the Fourth Proportional to 127,494,339.40, 191,147,030.70 and 86,451,347.80

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Solution

The fourth proportional to 127,494,339.40, 191,147,030.70 and 86,451,347.80 is: 129,612,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,494,339.40 : 191,147,030.70 = 86,451,347.80 : x
  2. Step 2: Convert to fraction form
    127,494,339.40/191,147,030.70 = 86,451,347.80/x
  3. Step 3: Cross multiply
    127,494,339.40x = 191,147,030.70 × 86,451,347.80
  4. Step 4: Simplify right side
    127,494,339.40x = 16,524,918,431,982,976
  5. Step 5: Solve for x
    x = 16,524,918,431,982,976/127,494,339.40
  6. Step 6: Final answer
    x = 129,612,957.80

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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.