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Finding the Fourth Proportional to 127,809.80, 191,714.70 and 108,126.80

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Solution

The fourth proportional to 127,809.80, 191,714.70 and 108,126.80 is: 162,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,809.80 : 191,714.70 = 108,126.80 : x
  2. Step 2: Convert to fraction form
    127,809.80/191,714.70 = 108,126.80/x
  3. Step 3: Cross multiply
    127,809.80x = 191,714.70 × 108,126.80
  4. Step 4: Simplify right side
    127,809.80x = 20,729,497,023.96
  5. Step 5: Solve for x
    x = 20,729,497,023.96/127,809.80
  6. Step 6: Final answer
    x = 162,190.20

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1.5x scale

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.