Home / 120,587.28-166,410.12-66,872.72

Finding the Fourth Proportional to 120,587.28, 166,410.12 and 66,872.72

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Solution

The fourth proportional to 120,587.28, 166,410.12 and 66,872.72 is: 92,284.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,587.28 : 166,410.12 = 66,872.72 : x
  2. Step 2: Convert to fraction form
    120,587.28/166,410.12 = 66,872.72/x
  3. Step 3: Cross multiply
    120,587.28x = 166,410.12 × 66,872.72
  4. Step 4: Simplify right side
    120,587.28x = 11,128,297,359.93
  5. Step 5: Solve for x
    x = 11,128,297,359.93/120,587.28
  6. Step 6: Final answer
    x = 92,284.17

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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.