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Finding the Fourth Proportional to 120,814.56, 166,726.15 and 66,369.02

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Solution

The fourth proportional to 120,814.56, 166,726.15 and 66,369.02 is: 91,590.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,814.56 : 166,726.15 = 66,369.02 : x
  2. Step 2: Convert to fraction form
    120,814.56/166,726.15 = 66,369.02/x
  3. Step 3: Cross multiply
    120,814.56x = 166,726.15 × 66,369.02
  4. Step 4: Simplify right side
    120,814.56x = 11,065,451,434.77
  5. Step 5: Solve for x
    x = 11,065,451,434.77/120,814.56
  6. Step 6: Final answer
    x = 91,590.38

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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.