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Finding the Fourth Proportional to 161,794.80, 242,692.20 and 127,969.20

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Solution

The fourth proportional to 161,794.80, 242,692.20 and 127,969.20 is: 191,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,794.80 : 242,692.20 = 127,969.20 : x
  2. Step 2: Convert to fraction form
    161,794.80/242,692.20 = 127,969.20/x
  3. Step 3: Cross multiply
    161,794.80x = 242,692.20 × 127,969.20
  4. Step 4: Simplify right side
    161,794.80x = 31,057,126,680.24
  5. Step 5: Solve for x
    x = 31,057,126,680.24/161,794.80
  6. Step 6: Final answer
    x = 191,953.80

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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.