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Finding the Fourth Proportional to 147,669.57, 203,784 and 80,601.57

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Solution

The fourth proportional to 147,669.57, 203,784 and 80,601.57 is: 111,230.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,669.57 : 203,784 = 80,601.57 : x
  2. Step 2: Convert to fraction form
    147,669.57/203,784 = 80,601.57/x
  3. Step 3: Cross multiply
    147,669.57x = 203,784 × 80,601.57
  4. Step 4: Simplify right side
    147,669.57x = 16,425,310,340.88
  5. Step 5: Solve for x
    x = 16,425,310,340.88/147,669.57
  6. Step 6: Final answer
    x = 111,230.16

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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.