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Finding the Fourth Proportional to 120,480.86, 166,256.07 and 66,762.74

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Solution

The fourth proportional to 120,480.86, 166,256.07 and 66,762.74 is: 92,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,480.86 : 166,256.07 = 66,762.74 : x
  2. Step 2: Convert to fraction form
    120,480.86/166,256.07 = 66,762.74/x
  3. Step 3: Cross multiply
    120,480.86x = 166,256.07 × 66,762.74
  4. Step 4: Simplify right side
    120,480.86x = 11,099,710,774.83
  5. Step 5: Solve for x
    x = 11,099,710,774.83/120,480.86
  6. Step 6: Final answer
    x = 92,128.42

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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.