Home / 120,820.87-166,728.16-67,109.32

Finding the Fourth Proportional to 120,820.87, 166,728.16 and 67,109.32

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Solution

The fourth proportional to 120,820.87, 166,728.16 and 67,109.32 is: 92,608.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,820.87 : 166,728.16 = 67,109.32 : x
  2. Step 2: Convert to fraction form
    120,820.87/166,728.16 = 67,109.32/x
  3. Step 3: Cross multiply
    120,820.87x = 166,728.16 × 67,109.32
  4. Step 4: Simplify right side
    120,820.87x = 11,189,013,442.45
  5. Step 5: Solve for x
    x = 11,189,013,442.45/120,820.87
  6. Step 6: Final answer
    x = 92,608.28

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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.