Home / 120,421.95-166,182.42-66,705.84

Finding the Fourth Proportional to 120,421.95, 166,182.42 and 66,705.84

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Solution

The fourth proportional to 120,421.95, 166,182.42 and 66,705.84 is: 92,054.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.95 : 166,182.42 = 66,705.84 : x
  2. Step 2: Convert to fraction form
    120,421.95/166,182.42 = 66,705.84/x
  3. Step 3: Cross multiply
    120,421.95x = 166,182.42 × 66,705.84
  4. Step 4: Simplify right side
    120,421.95x = 11,085,337,919.33
  5. Step 5: Solve for x
    x = 11,085,337,919.33/120,421.95
  6. Step 6: Final answer
    x = 92,054.13

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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.