Home / 120,431.79-166,223.52-80,147.25

Finding the Fourth Proportional to 120,431.79, 166,223.52 and 80,147.25

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Solution

The fourth proportional to 120,431.79, 166,223.52 and 80,147.25 is: 110,621.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,431.79 : 166,223.52 = 80,147.25 : x
  2. Step 2: Convert to fraction form
    120,431.79/166,223.52 = 80,147.25/x
  3. Step 3: Cross multiply
    120,431.79x = 166,223.52 × 80,147.25
  4. Step 4: Simplify right side
    120,431.79x = 13,322,358,013.32
  5. Step 5: Solve for x
    x = 13,322,358,013.32/120,431.79
  6. Step 6: Final answer
    x = 110,621.61

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1.5x scale

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.