Home / 120,399.95-166,144.64-66,681.77

Finding the Fourth Proportional to 120,399.95, 166,144.64 and 66,681.77

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Solution

The fourth proportional to 120,399.95, 166,144.64 and 66,681.77 is: 92,016.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,399.95 : 166,144.64 = 66,681.77 : x
  2. Step 2: Convert to fraction form
    120,399.95/166,144.64 = 66,681.77/x
  3. Step 3: Cross multiply
    120,399.95x = 166,144.64 × 66,681.77
  4. Step 4: Simplify right side
    120,399.95x = 11,078,817,507.08
  5. Step 5: Solve for x
    x = 11,078,817,507.08/120,399.95
  6. Step 6: Final answer
    x = 92,016.79

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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.