Home / 120,485.08-166,288.98-115,169.86

Finding the Fourth Proportional to 120,485.08, 166,288.98 and 115,169.86

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Solution

The fourth proportional to 120,485.08, 166,288.98 and 115,169.86 is: 158,953.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,485.08 : 166,288.98 = 115,169.86 : x
  2. Step 2: Convert to fraction form
    120,485.08/166,288.98 = 115,169.86/x
  3. Step 3: Cross multiply
    120,485.08x = 166,288.98 × 115,169.86
  4. Step 4: Simplify right side
    120,485.08x = 19,151,478,546.14
  5. Step 5: Solve for x
    x = 19,151,478,546.14/120,485.08
  6. Step 6: Final answer
    x = 158,953.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.