Home / 120,515.61-166,312.77-66,801.54

Finding the Fourth Proportional to 120,515.61, 166,312.77 and 66,801.54

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Solution

The fourth proportional to 120,515.61, 166,312.77 and 66,801.54 is: 92,186.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,515.61 : 166,312.77 = 66,801.54 : x
  2. Step 2: Convert to fraction form
    120,515.61/166,312.77 = 66,801.54/x
  3. Step 3: Cross multiply
    120,515.61x = 166,312.77 × 66,801.54
  4. Step 4: Simplify right side
    120,515.61x = 11,109,949,157.67
  5. Step 5: Solve for x
    x = 11,109,949,157.67/120,515.61
  6. Step 6: Final answer
    x = 92,186.81

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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.