Home / 120,421.58-166,181.78-66,710.07

Finding the Fourth Proportional to 120,421.58, 166,181.78 and 66,710.07

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Solution

The fourth proportional to 120,421.58, 166,181.78 and 66,710.07 is: 92,059.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.58 : 166,181.78 = 66,710.07 : x
  2. Step 2: Convert to fraction form
    120,421.58/166,181.78 = 66,710.07/x
  3. Step 3: Cross multiply
    120,421.58x = 166,181.78 × 66,710.07
  4. Step 4: Simplify right side
    120,421.58x = 11,085,997,842.97
  5. Step 5: Solve for x
    x = 11,085,997,842.97/120,421.58
  6. Step 6: Final answer
    x = 92,059.90

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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.