Home / 147,789.56-203,949.90-80,721.56

Finding the Fourth Proportional to 147,789.56, 203,949.90 and 80,721.56

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Solution

The fourth proportional to 147,789.56, 203,949.90 and 80,721.56 is: 111,395.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,789.56 : 203,949.90 = 80,721.56 : x
  2. Step 2: Convert to fraction form
    147,789.56/203,949.90 = 80,721.56/x
  3. Step 3: Cross multiply
    147,789.56x = 203,949.90 × 80,721.56
  4. Step 4: Simplify right side
    147,789.56x = 16,463,154,599.72
  5. Step 5: Solve for x
    x = 16,463,154,599.72/147,789.56
  6. Step 6: Final answer
    x = 111,395.92

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1.5x scale

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.