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Finding the Fourth Proportional to 155,157.76, 213,673.20 and 147,692.80

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Solution

The fourth proportional to 155,157.76, 213,673.20 and 147,692.80 is: 203,392.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,157.76 : 213,673.20 = 147,692.80 : x
  2. Step 2: Convert to fraction form
    155,157.76/213,673.20 = 147,692.80/x
  3. Step 3: Cross multiply
    155,157.76x = 213,673.20 × 147,692.80
  4. Step 4: Simplify right side
    155,157.76x = 31,557,993,192.96
  5. Step 5: Solve for x
    x = 31,557,993,192.96/155,157.76
  6. Step 6: Final answer
    x = 203,392.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.