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Finding the Fourth Proportional to 148,382.10, 204,767 and 80,400.90

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Solution

The fourth proportional to 148,382.10, 204,767 and 80,400.90 is: 110,953.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,382.10 : 204,767 = 80,400.90 : x
  2. Step 2: Convert to fraction form
    148,382.10/204,767 = 80,400.90/x
  3. Step 3: Cross multiply
    148,382.10x = 204,767 × 80,400.90
  4. Step 4: Simplify right side
    148,382.10x = 16,463,451,090.30
  5. Step 5: Solve for x
    x = 16,463,451,090.30/148,382.10
  6. Step 6: Final answer
    x = 110,953.08

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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.