Home / 113,872.10-170,662.35-87,445.85

Finding the Fourth Proportional to 113,872.10, 170,662.35 and 87,445.85

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Solution

The fourth proportional to 113,872.10, 170,662.35 and 87,445.85 is: 131,056.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,872.10 : 170,662.35 = 87,445.85 : x
  2. Step 2: Convert to fraction form
    113,872.10/170,662.35 = 87,445.85/x
  3. Step 3: Cross multiply
    113,872.10x = 170,662.35 × 87,445.85
  4. Step 4: Simplify right side
    113,872.10x = 14,923,714,258.75
  5. Step 5: Solve for x
    x = 14,923,714,258.75/113,872.10
  6. Step 6: Final answer
    x = 131,056.81

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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.