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Finding the Fourth Proportional to 120,596.78, 166,415.27 and 66,876.77

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Solution

The fourth proportional to 120,596.78, 166,415.27 and 66,876.77 is: 92,285.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,596.78 : 166,415.27 = 66,876.77 : x
  2. Step 2: Convert to fraction form
    120,596.78/166,415.27 = 66,876.77/x
  3. Step 3: Cross multiply
    120,596.78x = 166,415.27 × 66,876.77
  4. Step 4: Simplify right side
    120,596.78x = 11,129,314,569.82
  5. Step 5: Solve for x
    x = 11,129,314,569.82/120,596.78
  6. Step 6: Final answer
    x = 92,285.34

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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.