Home / 147,769.80-221,654.70-128,524.20

Finding the Fourth Proportional to 147,769.80, 221,654.70 and 128,524.20

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Solution

The fourth proportional to 147,769.80, 221,654.70 and 128,524.20 is: 192,786.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,769.80 : 221,654.70 = 128,524.20 : x
  2. Step 2: Convert to fraction form
    147,769.80/221,654.70 = 128,524.20/x
  3. Step 3: Cross multiply
    147,769.80x = 221,654.70 × 128,524.20
  4. Step 4: Simplify right side
    147,769.80x = 28,487,992,993.74
  5. Step 5: Solve for x
    x = 28,487,992,993.74/147,769.80
  6. Step 6: Final answer
    x = 192,786.30

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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.