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Finding the Fourth Proportional to 127,561.80, 191,256.30 and 67,600.20

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Solution

The fourth proportional to 127,561.80, 191,256.30 and 67,600.20 is: 101,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,561.80 : 191,256.30 = 67,600.20 : x
  2. Step 2: Convert to fraction form
    127,561.80/191,256.30 = 67,600.20/x
  3. Step 3: Cross multiply
    127,561.80x = 191,256.30 × 67,600.20
  4. Step 4: Simplify right side
    127,561.80x = 12,928,964,131.26
  5. Step 5: Solve for x
    x = 12,928,964,131.26/127,561.80
  6. Step 6: Final answer
    x = 101,354.51

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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.