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Finding the Fourth Proportional to 151,872.60, 228,003.30 and 80,851.80

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Solution

The fourth proportional to 151,872.60, 228,003.30 and 80,851.80 is: 121,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,872.60 : 228,003.30 = 80,851.80 : x
  2. Step 2: Convert to fraction form
    151,872.60/228,003.30 = 80,851.80/x
  3. Step 3: Cross multiply
    151,872.60x = 228,003.30 × 80,851.80
  4. Step 4: Simplify right side
    151,872.60x = 18,434,477,210.94
  5. Step 5: Solve for x
    x = 18,434,477,210.94/151,872.60
  6. Step 6: Final answer
    x = 121,381.19

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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.