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Finding the Fourth Proportional to 147,647.32, 203,750.46 and 80,579.80

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Solution

The fourth proportional to 147,647.32, 203,750.46 and 80,579.80 is: 111,198.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,647.32 : 203,750.46 = 80,579.80 : x
  2. Step 2: Convert to fraction form
    147,647.32/203,750.46 = 80,579.80/x
  3. Step 3: Cross multiply
    147,647.32x = 203,750.46 × 80,579.80
  4. Step 4: Simplify right side
    147,647.32x = 16,418,171,316.71
  5. Step 5: Solve for x
    x = 16,418,171,316.71/147,647.32
  6. Step 6: Final answer
    x = 111,198.57

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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.