Home / 120,520.81-166,316.07-66,805.35

Finding the Fourth Proportional to 120,520.81, 166,316.07 and 66,805.35

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Solution

The fourth proportional to 120,520.81, 166,316.07 and 66,805.35 is: 92,189.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,520.81 : 166,316.07 = 66,805.35 : x
  2. Step 2: Convert to fraction form
    120,520.81/166,316.07 = 66,805.35/x
  3. Step 3: Cross multiply
    120,520.81x = 166,316.07 × 66,805.35
  4. Step 4: Simplify right side
    120,520.81x = 11,110,802,932.95
  5. Step 5: Solve for x
    x = 11,110,802,932.95/120,520.81
  6. Step 6: Final answer
    x = 92,189.92

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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.