Home / 111,360.24-166,744.80-87,102.72

Finding the Fourth Proportional to 111,360.24, 166,744.80 and 87,102.72

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Solution

The fourth proportional to 111,360.24, 166,744.80 and 87,102.72 is: 130,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,360.24 : 166,744.80 = 87,102.72 : x
  2. Step 2: Convert to fraction form
    111,360.24/166,744.80 = 87,102.72/x
  3. Step 3: Cross multiply
    111,360.24x = 166,744.80 × 87,102.72
  4. Step 4: Simplify right side
    111,360.24x = 14,523,925,625.86
  5. Step 5: Solve for x
    x = 14,523,925,625.86/111,360.24
  6. Step 6: Final answer
    x = 130,422.90

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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.