Home / 120,421.19-166,179.16-66,705.08

Finding the Fourth Proportional to 120,421.19, 166,179.16 and 66,705.08

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Solution

The fourth proportional to 120,421.19, 166,179.16 and 66,705.08 is: 92,051.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.19 : 166,179.16 = 66,705.08 : x
  2. Step 2: Convert to fraction form
    120,421.19/166,179.16 = 66,705.08/x
  3. Step 3: Cross multiply
    120,421.19x = 166,179.16 × 66,705.08
  4. Step 4: Simplify right side
    120,421.19x = 11,084,994,162.13
  5. Step 5: Solve for x
    x = 11,084,994,162.13/120,421.19
  6. Step 6: Final answer
    x = 92,051.86

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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.