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Finding the Fourth Proportional to 136,552.40, 204,828.60 and 80,565.20

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Solution

The fourth proportional to 136,552.40, 204,828.60 and 80,565.20 is: 120,847.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,552.40 : 204,828.60 = 80,565.20 : x
  2. Step 2: Convert to fraction form
    136,552.40/204,828.60 = 80,565.20/x
  3. Step 3: Cross multiply
    136,552.40x = 204,828.60 × 80,565.20
  4. Step 4: Simplify right side
    136,552.40x = 16,502,057,124.72
  5. Step 5: Solve for x
    x = 16,502,057,124.72/136,552.40
  6. Step 6: Final answer
    x = 120,847.80

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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.