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Finding the Fourth Proportional to 120,813.62, 181,220.56 and 45,916.16

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Solution

The fourth proportional to 120,813.62, 181,220.56 and 45,916.16 is: 68,874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,813.62 : 181,220.56 = 45,916.16 : x
  2. Step 2: Convert to fraction form
    120,813.62/181,220.56 = 45,916.16/x
  3. Step 3: Cross multiply
    120,813.62x = 181,220.56 × 45,916.16
  4. Step 4: Simplify right side
    120,813.62x = 8,320,951,207.36
  5. Step 5: Solve for x
    x = 8,320,951,207.36/120,813.62
  6. Step 6: Final answer
    x = 68,874.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.