Home / 120,645.18-166,484.70-66,929.22

Finding the Fourth Proportional to 120,645.18, 166,484.70 and 66,929.22

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Solution

The fourth proportional to 120,645.18, 166,484.70 and 66,929.22 is: 92,359.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,645.18 : 166,484.70 = 66,929.22 : x
  2. Step 2: Convert to fraction form
    120,645.18/166,484.70 = 66,929.22/x
  3. Step 3: Cross multiply
    120,645.18x = 166,484.70 × 66,929.22
  4. Step 4: Simplify right side
    120,645.18x = 11,142,691,112.93
  5. Step 5: Solve for x
    x = 11,142,691,112.93/120,645.18
  6. Step 6: Final answer
    x = 92,359.19

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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.