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Finding the Fourth Proportional to 127,540.80, 191,080.80 and 109,108.80

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Solution

The fourth proportional to 127,540.80, 191,080.80 and 109,108.80 is: 163,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,540.80 : 191,080.80 = 109,108.80 : x
  2. Step 2: Convert to fraction form
    127,540.80/191,080.80 = 109,108.80/x
  3. Step 3: Cross multiply
    127,540.80x = 191,080.80 × 109,108.80
  4. Step 4: Simplify right side
    127,540.80x = 20,848,596,791.04
  5. Step 5: Solve for x
    x = 20,848,596,791.04/127,540.80
  6. Step 6: Final answer
    x = 163,466.10

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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.