Home / 147,356.20-203,343.78-80,288.20

Finding the Fourth Proportional to 147,356.20, 203,343.78 and 80,288.20

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Solution

The fourth proportional to 147,356.20, 203,343.78 and 80,288.20 is: 110,793.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,356.20 : 203,343.78 = 80,288.20 : x
  2. Step 2: Convert to fraction form
    147,356.20/203,343.78 = 80,288.20/x
  3. Step 3: Cross multiply
    147,356.20x = 203,343.78 × 80,288.20
  4. Step 4: Simplify right side
    147,356.20x = 16,326,106,077.40
  5. Step 5: Solve for x
    x = 16,326,106,077.40/147,356.20
  6. Step 6: Final answer
    x = 110,793.48

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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.