Home / 120,521.18-166,303.94-66,805.76

Finding the Fourth Proportional to 120,521.18, 166,303.94 and 66,805.76

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Solution

The fourth proportional to 120,521.18, 166,303.94 and 66,805.76 is: 92,183.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,521.18 : 166,303.94 = 66,805.76 : x
  2. Step 2: Convert to fraction form
    120,521.18/166,303.94 = 66,805.76/x
  3. Step 3: Cross multiply
    120,521.18x = 166,303.94 × 66,805.76
  4. Step 4: Simplify right side
    120,521.18x = 11,110,059,937.15
  5. Step 5: Solve for x
    x = 11,110,059,937.15/120,521.18
  6. Step 6: Final answer
    x = 92,183.47

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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.