Home / 120,690.98-166,555.36-66,979.47

Finding the Fourth Proportional to 120,690.98, 166,555.36 and 66,979.47

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Solution

The fourth proportional to 120,690.98, 166,555.36 and 66,979.47 is: 92,432.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,690.98 : 166,555.36 = 66,979.47 : x
  2. Step 2: Convert to fraction form
    120,690.98/166,555.36 = 66,979.47/x
  3. Step 3: Cross multiply
    120,690.98x = 166,555.36 × 66,979.47
  4. Step 4: Simplify right side
    120,690.98x = 11,155,789,403.56
  5. Step 5: Solve for x
    x = 11,155,789,403.56/120,690.98
  6. Step 6: Final answer
    x = 92,432.67

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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.