Home / 120,485.28-166,276.08-66,776.16

Finding the Fourth Proportional to 120,485.28, 166,276.08 and 66,776.16

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Solution

The fourth proportional to 120,485.28, 166,276.08 and 66,776.16 is: 92,154.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,485.28 : 166,276.08 = 66,776.16 : x
  2. Step 2: Convert to fraction form
    120,485.28/166,276.08 = 66,776.16/x
  3. Step 3: Cross multiply
    120,485.28x = 166,276.08 × 66,776.16
  4. Step 4: Simplify right side
    120,485.28x = 11,103,278,122.25
  5. Step 5: Solve for x
    x = 11,103,278,122.25/120,485.28
  6. Step 6: Final answer
    x = 92,154.64

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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.